Bump typescript from 4.1.3 to 4.2.3 in /frontend

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.1.3 to 4.2.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.1.3...v4.2.3)

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

frontend/package.json

@@ -20,7 +20,7 @@
     "rollup-plugin-livereload": "^2.0.0",
     "rollup-plugin-terser": "^7.0.2",
     "tslib": "^2.1.0",
-    "typescript": "^4.1.3"
+    "typescript": "^4.2.3"
   },
   "dependencies": {
     "js-base64": "^3.6.0",

frontend/yarn.lock

@@ -4444,10 +4444,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^4.1.3:
-  version "4.1.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.1.3.tgz#519d582bd94cba0cf8934c7d8e8467e473f53bb7"
-  integrity sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==
+typescript@^4.2.3:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.3.tgz#39062d8019912d43726298f09493d598048c1ce3"
+  integrity sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==
 
 unicode-canonical-property-names-ecmascript@^1.0.4:
   version "1.0.4"