Add ability to run workflow manually

Signed-off-by: Rob Stryker <rob@oxbeef.net>

Author: robstryker

.github/workflows/gh-actions.yml

@@ -5,6 +5,7 @@ on:
     branches: [master]
   pull_request:
     branches: [master]
+  workflow_dispatch:
 
 jobs:
   test:

package.json

@@ -100,9 +100,7 @@
     "unzip-stream": "^0.3.1",
     "utf-8-validate": "^5.0.2",
     "selenium-webdriver": "^4.1.0",
-    "vscode-extension-tester": "^5.0.0",
-    "vscode-extension-tester-locators": "^3.0.0",
-    "vscode-test": "^1.4.0"
+    "@vscode/test-electron": "^2.3.8"
   },
   "dependencies": {
     "@redhat-developer/vscode-extension-proposals": "^0.0.22",