fix: workflow patches

Author: cmoog

.github/workflows/package.yaml

@@ -4,12 +4,15 @@ on:
       - master
 name: Build Extension
 jobs:
-  deploy:
+  pacakge:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
-      - run: npm install
-      - run: npm install --global vsce
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '15'
+      - run: npm ci
+      - run: npm install -global vsce
       - run: vsce package --out coder.vsix
       - uses: actions/upload-artifact@v2
         with: