Fix build-and-test in update-codeql.yml workflow

This commit is an attempt to fix the "build-and-test" step
of the update-codeql.yml actions workflow, which has been
failing due to missing dev/test dependencies on "ubuntu-latest"
actions runner:

- New step "Update - Install xvfb and VS Code dependencies" - Installs
  xvfb (virtual framebuffer) and system libraries VS Code needs
  (matching the pattern from copilot-setup-steps.yml).
- Wrapped npm run build-and-test with xvfb-run -a to provide a virtual
  display — matching how build-and-test-extension.yml runs integration
  tests.

Author: data-douser

.github/workflows/update-codeql.yml

@@ -134,8 +134,14 @@ jobs:
       - name: Update - Upgrade CodeQL pack dependencies
         run: server/scripts/upgrade-packs.sh
 
+      - name: Update - Install xvfb and VS Code dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y xvfb libgbm1 libgtk-3-0 libxshmfence1
+          sudo apt-get install -y libasound2t64 || sudo apt-get install -y libasound2
+
       - name: Update - Build and test
-        run: npm run build-and-test
+        run: xvfb-run -a npm run build-and-test
 
       - name: Update - Create Pull Request
         uses: peter-evans/create-pull-request@c0f553fe549906ede9cf27b5156039d195d2ece0