Update dependency typescript to v3.9.10

Author: renovate-bot

vscode-testextension/package-lock.json

@@ -48,7 +48,7 @@
     "devDependencies": {
         "@types/mocha": "8.0.0",
         "@types/node": "14.0.25",
-        "typescript": "3.9.7",
+        "typescript": "3.9.10",
         "vscode": "1.1.37"
     },
     "dependencies": {