chore(deps): upgrade to Typescript v.4.2.4

This is a preliminary step in us migrating over (potentially) to use
workspaces which in theory will significantly improve the build speeds.

Signed-off-by: Peter Somogyvari <[email protected]>

Author: petermetz

package-lock.json

@@ -103,7 +103,7 @@
     "tape-promise": "4.0.0",
     "ts-loader": "6.2.1",
     "ts-node": "8.9.1",
-    "typescript": "4.0.3",
+    "typescript": "4.2.4",
     "webpack": "git+https://github.com/petermetz/webpack.git#cactus-webpack-ignore-require-calls-feature",
     "webpack-bundle-analyzer": "3.6.0",
     "webpack-cli": "3.3.11"