Bump typescript from 3.7.2 to 4.2.4 in /web

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.7.2 to 4.2.4.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.7.2...v4.2.4)

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

web/package.json

@@ -43,6 +43,6 @@
     "react": "^16.12.0",
     "react-color": "^2.17.3",
     "react-dom": "^16.11.0",
-    "typescript": "^3.7.2"
+    "typescript": "^4.2.4"
   }
 }

web/yarn.lock

@@ -7677,10 +7677,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
-  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+typescript@^4.2.4:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"
+  integrity sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==
 
 uglify-js@^3.1.4:
   version "3.6.0"