Update dependency typescript to v3.9.5 (#231)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package-lock.json

@@ -63,7 +63,7 @@
     "postcss-loader": "3.0.0",
     "sass-loader": "8.0.2",
     "ts-loader": "7.0.5",
-    "typescript": "3.9.3",
+    "typescript": "3.9.5",
     "webpack": "4.43.0",
     "webpack-cli": "3.3.11",
     "webpack-merge": "4.2.2",