Pin dependencies

Author: renovate-bot

vscode-testextension/package.json

@@ -46,10 +46,10 @@
         "postinstall": "node ./node_modules/vscode/bin/install"
     },
     "devDependencies": {
-        "@types/mocha": "^8.0.0",
-        "@types/node": "^14.0.25",
-        "typescript": "^3.9.7",
-        "vscode": "^1.1.37"
+        "@types/mocha": "8.0.0",
+        "@types/node": "14.0.25",
+        "typescript": "3.9.7",
+        "vscode": "1.1.37"
     },
     "dependencies": {
         "vscode-languageclient": "^7.0.0-next.8",