Bump prismjs from 1.21.0 to 1.23.0

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.21.0 to 1.23.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.21.0...v1.23.0)

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

Author: dependabot[bot]

package.json

@@ -46,7 +46,7 @@
     "mdast-util-to-string": "^1.0.5",
     "normalize.css": "^8.0.0",
     "prettier": "^1.7.4",
-    "prismjs": "^1.15.0",
+    "prismjs": "^1.23.0",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
     "react-helmet": "^5.2.0",

yarn.lock

@@ -12109,10 +12109,10 @@ pretty-format@^25.5.0:
     ansi-styles "^4.0.0"
     react-is "^16.12.0"
 
-prismjs@^1.15.0, prismjs@^1.6.0:
-  version "1.21.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.21.0.tgz#36c086ec36b45319ec4218ee164c110f9fc015a3"
-  integrity sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==
+prismjs@^1.23.0, prismjs@^1.6.0:
+  version "1.23.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.23.0.tgz#d3b3967f7d72440690497652a9d40ff046067f33"
+  integrity sha512-c29LVsqOaLbBHuIbsTxaKENh1N2EQBOHaWv7gkHN4dgRbxSREqDnDbtFJYdpPauS4YCplMSNCABQ6Eeor69bAA==
   optionalDependencies:
     clipboard "^2.0.0"