Bump acorn from 6.3.0 to 6.4.1

Bumps [acorn](https://github.com/acornjs/acorn) from 6.3.0 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@6.3.0...6.4.1)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

yarn.lock

@@ -1008,15 +1008,15 @@
     which "^1.3.1"
 
 "@jimp/bmp@link:packages/type-bmp":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     bmp-js "^0.1.0"
     core-js "^3.4.1"
 
 "@jimp/core@link:packages/core":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
@@ -1032,151 +1032,151 @@
     tinycolor2 "^1.4.1"
 
 "@jimp/custom@link:packages/custom":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/core" "link:packages/core"
     core-js "^3.4.1"
 
 "@jimp/gif@link:packages/type-gif":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
     omggif "^1.0.9"
 
 "@jimp/jpeg@link:packages/type-jpeg":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
     jpeg-js "^0.3.4"
 
 "@jimp/plugin-blit@link:packages/plugin-blit":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-blur@link:packages/plugin-blur":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-color@link:packages/plugin-color":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
     tinycolor2 "^1.4.1"
 
 "@jimp/plugin-contain@link:packages/plugin-contain":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-cover@link:packages/plugin-cover":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-crop@link:packages/plugin-crop":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-displace@link:packages/plugin-displace":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-dither@link:packages/plugin-dither":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-flip@link:packages/plugin-flip":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-gaussian@link:packages/plugin-gaussian":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-invert@link:packages/plugin-invert":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-mask@link:packages/plugin-mask":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-normalize@link:packages/plugin-normalize":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-print@link:packages/plugin-print":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
     load-bmfont "^1.4.0"
 
 "@jimp/plugin-resize@link:packages/plugin-resize":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-rotate@link:packages/plugin-rotate":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugin-scale@link:packages/plugin-scale":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
 
 "@jimp/plugins@link:packages/plugins":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/plugin-blit" "link:packages/plugin-blit"
@@ -1200,29 +1200,29 @@
     timm "^1.6.1"
 
 "@jimp/png@link:packages/type-png":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/utils" "link:packages/utils"
     core-js "^3.4.1"
     pngjs "^3.3.3"
 
 "@jimp/test-utils@link:packages/test-utils":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     core-js "^3.4.1"
     pngjs "^3.3.3"
 
 "@jimp/tiff@link:packages/type-tiff":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     core-js "^3.4.1"
     utif "^2.0.1"
 
 "@jimp/types@link:packages/types":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     "@jimp/bmp" "link:packages/type-bmp"
@@ -1234,7 +1234,7 @@
     timm "^1.6.1"
 
 "@jimp/utils@link:packages/utils":
-  version "0.9.5"
+  version "0.9.6"
   dependencies:
     "@babel/runtime" "^7.7.2"
     core-js "^3.4.1"
@@ -2288,9 +2288,9 @@ acorn-walk@^7.0.0:
   integrity sha512-7Bv1We7ZGuU79zZbb6rRqcpxo3OY+zrdtloZWoyD8fmGX+FeXRjE+iuGkZjSXLVovLzrsvMGMy0EkwA0E0umxg==
 
 acorn@^6.0.2, acorn@^6.0.7:
-  version "6.3.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.3.0.tgz#0087509119ffa4fc0a0041d1e93a417e68cb856e"
-  integrity sha512-/czfa8BwS88b9gWQVhc8eknunSA2DoJpJyTQkhheIf5E48u1N0R4q/YxxsAeqRrmK9TQ/uYfgLDfZo91UlANIA==
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 acorn@^7.0.0:
   version "7.0.0"