Bump typescript from 3.9.7 to 3.9.9

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.7 to 3.9.9.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.7...v3.9.9)

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

package.json

@@ -103,7 +103,7 @@
     "style-loader": "^2.0.0",
     "terser-webpack-plugin": "^4.2.3",
     "ts-loader": "^8.0.18",
-    "typescript": "^3.9.7",
+    "typescript": "^3.9.9",
     "xlsx": "^0.16.9"
   },
   "browserslist": [