ci: upgrade to Sauce Connect 5 to fix SC4 deprecation

Sauce Connect 4 (SC4) reaches end of life on July 31, 2026 and will no longer
be supported by Sauce Labs servers.

This commit updates our CI workflow to use Sauce Connect 5 via the official
GitHub action saucelabs/sauce-connect-action@v3 (pinned to release v3 SHA
cb88b508c6f9ff4d84490093733315dbd55de022):
- Replaces legacy Sauce Connect 4 manual scripts (start-tunnel.sh,
  wait-for-tunnel.sh, stop-tunnel.sh) in .github/workflows/ci.yml with
  saucelabs/sauce-connect-action@v3, which manages the Sauce Connect 5
  tunnel lifecycle automatically.
- Specifies required region input (`region: us-west`) and modern tunnel
  input (`tunnelName: ${{ env.SAUCE_TUNNEL_IDENTIFIER }}`).
- Removes obsolete SC4 legacy environment variables (SAUCE_LOG_FILE,
  SAUCE_READY_FILE, SAUCE_PID_FILE, SAUCE_READY_FILE_TIMEOUT) and
  the sauce-connect.log upload artifact step.
- Updates Protractor Sauce capabilities in
  tests/e2e/assets/protractor-saucelabs.conf.js to specify `sauceRegion: 'us'`
  and include `tunnelName` alongside `tunnelIdentifier` for SC5 W3C
  capability compatibility.

TAG=agy
CONV=364b9a2f-e7e4-4f68-9f2a-92ecc5151b67

Author: alan-agius4

.github/workflows/ci.yml

@@ -217,25 +217,18 @@ jobs:
         uses: angular/dev-infra/github-actions/bazel/configure-remote@24ba9709ca4bf6548bba6a9abfe2799e90645a60 # main
         with:
           google_credential: ${{ secrets.RBE_TRUSTED_BUILDS_USER }}
+      - name: Start Sauce Connect
+        uses: saucelabs/sauce-connect-action@cb88b508c6f9ff4d84490093733315dbd55de022 # v3
+        with:
+          username: ${{ vars.SAUCE_USERNAME }}
+          accessKey: ${{ secrets.SAUCE_ACCESS_KEY }}
+          region: us-west
+          tunnelName: ${{ env.SAUCE_TUNNEL_IDENTIFIER }}
       - name: Run E2E Browser tests
         env:
           SAUCE_USERNAME: ${{ vars.SAUCE_USERNAME }}
           SAUCE_ACCESS_KEY: ${{ secrets.SAUCE_ACCESS_KEY }}
-          SAUCE_LOG_FILE: /tmp/angular/sauce-connect.log
-          SAUCE_READY_FILE: /tmp/angular/sauce-connect-ready-file.lock
-          SAUCE_PID_FILE: /tmp/angular/sauce-connect-pid-file.lock
-          SAUCE_TUNNEL_IDENTIFIER: 'angular-${{ github.run_number }}'
-          SAUCE_READY_FILE_TIMEOUT: 120
-        run: |
-          ./scripts/saucelabs/start-tunnel.sh &
-          ./scripts/saucelabs/wait-for-tunnel.sh
-          pnpm bazel test --config=saucelabs //tests:e2e.saucelabs
-          ./scripts/saucelabs/stop-tunnel.sh
-      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        if: ${{ failure() }}
-        with:
-          name: sauce-connect-log
-          path: ${{ env.SAUCE_CONNECT_DIR_IN_HOST }}/sauce-connect.log
+        run: pnpm bazel test --config=saucelabs //tests:e2e.saucelabs
 
   publish-snapshots:
     needs: build

scripts/saucelabs/start-tunnel.sh

@@ -13,6 +13,7 @@ const tunnelIdentifier = process.env['SAUCE_TUNNEL_IDENTIFIER'];
 exports.config = {
   sauceUser: process.env['SAUCE_USERNAME'],
   sauceKey: process.env['SAUCE_ACCESS_KEY'],
+  sauceRegion: 'us',
 
   allScriptsTimeout: 11000,
   specs: ['./src/**/*.e2e-spec.ts'],
@@ -24,48 +25,88 @@ exports.config = {
       version: '132',
       platform: 'Windows 11',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'chrome',
       version: '131',
       platform: 'Windows 11',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'firefox',
       version: '134',
       platform: 'Windows 11',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'firefox',
       version: '128', // Latest Firefox ESR version as of Jan 2025
       platform: 'Windows 11',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'safari',
       platform: 'macOS 13',
       version: '17',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'safari',
       platform: 'macOS 12',
       version: '16',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'MicrosoftEdge',
       platform: 'Windows 11',
       version: '132',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
     {
       browserName: 'MicrosoftEdge',
       platform: 'Windows 11',
       version: '131',
       tunnelIdentifier,
+      tunnelName: tunnelIdentifier,
+      'sauce:options': {
+        tunnelIdentifier,
+        tunnelName: tunnelIdentifier,
+      },
     },
   ],