security: fix all github potential security vulnerabilities

Author: abdfnx

package.json

@@ -41,7 +41,7 @@
     "ts-node": "10.7.0"
   },
   "devDependencies": {
-    "async": "^3.2.2",
+    "async": "^2.6.4",
     "clean-css": "^4.1.11",
     "glob-parent": "^5.1.2",
     "node-forge": "^1.3.0",

yarn.lock

@@ -2505,10 +2505,12 @@ async@^2.6.2:
   dependencies:
     lodash "^4.17.14"
 
-async@^3.2.2:
-  version "3.2.3"
-  resolved "https://registry.yarnpkg.com/async/-/async-3.2.3.tgz#ac53dafd3f4720ee9e8a160628f18ea91df196c9"
-  integrity sha512-spZRyzKL5l5BZQrr/6m/SqFdBN0q3OCI0f9rjfBzCMBIP4p75P620rR3gTmaksNOhmzgdxcaxdNfMy6anrbM0g==
+async@^2.6.4:
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
+  dependencies:
+    lodash "^4.17.14"
 
 async@~0.2.6:
   version "0.2.10"