Bump highlight.js from 10.2.1 to 10.4.1 in /frontend

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 10.2.1 to 10.4.1.
- [Release notes](https://github.com/highlightjs/highlight.js/releases)
- [Changelog](https://github.com/highlightjs/highlight.js/blob/master/CHANGES.md)
- [Commits](https://github.com/highlightjs/highlight.js/compare/10.2.1...10.4.1)

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

frontend/package-lock.json

@@ -5558,9 +5558,9 @@
             "integrity": "sha512-l9sfDFsuqtOqKDsQdqrMRk0U85RZc0RtOR9yPI7mRVOa4FsR/BVnZ0shmQRM96Ji99kYZP/7hn1cedc1+ApsTQ=="
         },
         "highlight.js": {
-            "version": "10.2.1",
-            "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.2.1.tgz",
-            "integrity": "sha512-A+sckVPIb9zQTUydC9lpRX1qRFO/N0OKEh0NwIr65ckvWA/oMY8v9P3+kGRK3w2ULSh9E8v5MszXafodQ6039g=="
+            "version": "10.4.1",
+            "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.4.1.tgz",
+            "integrity": "sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg=="
         },
         "history": {
             "version": "4.10.1",

frontend/package.json

@@ -35,7 +35,7 @@
         "ts-jest": "^26.4.1",
         "@blueprintjs/core": "^3.33.0",
         "@blueprintjs/icons": "^3.22.0",
-        "highlight.js": "^10.2.1",
+        "highlight.js": "^10.4.1",
         "react": "^16.13.1",
         "react-dom": "^16.13.1",
         "react-markdown": "^4.3.1",