fix(e2e): serialize concurrent E2E runs to prevent environment conflicts

Concurrent E2E runs share the same headlamp-e2e release name in
privilegedescalation-dev. When two runs overlap, one run's teardown
(if: always()) deletes the shared Deployment/Service/ConfigMap while
the other is still using it, causing Playwright auth setup to time out
waiting for the Headlamp UI.

Adds a repo-wide concurrency group so only one E2E run executes at a
time. cancel-in-progress: false queues incoming runs rather than
cancelling in-flight ones to avoid leaving dangling cluster resources
when teardown is interrupted.

Fixes: PRI-815

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/e2e.yaml

@@ -10,6 +10,16 @@ on:
 permissions:
   contents: read
 
+# Serialize E2E runs repo-wide. All concurrent runs share the same
+# E2E_RELEASE name (headlamp-e2e) in a single namespace. Without
+# serialization, one run's teardown (if: always()) deletes the
+# deployment while a concurrent run is still using it, causing auth
+# setup timeouts. cancel-in-progress: false queues rather than kills
+# to avoid leaving dangling cluster resources.
+concurrency:
+  group: e2e-${{ github.repository }}
+  cancel-in-progress: false
+
 env:
   E2E_NAMESPACE: privilegedescalation-dev
   E2E_RELEASE: headlamp-e2e
@@ -24,7 +34,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '22'
           cache: 'npm'
@@ -64,7 +74,7 @@ jobs:
         run: scripts/teardown-e2e-headlamp.sh
 
       - name: Upload Playwright report
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: playwright-report
@@ -72,7 +82,7 @@ jobs:
           retention-days: 7
 
       - name: Upload test results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         if: failure()
         with:
           name: test-results

artifacthub-pkg.yml

@@ -11,7 +11,7 @@ description: >-
   `polaris-dashboard` service in the `polaris` namespace.
 license: Apache-2.0
 homeURL: "https://github.com/privilegedescalation/headlamp-polaris-plugin"
-appVersion: "5.0"
+appVersion: "10.1.6"
 category: security
 keywords:
   - polaris
@@ -72,5 +72,5 @@ maintainers:
 annotations:
   headlamp/plugin/archive-url: "https://github.com/privilegedescalation/headlamp-polaris-plugin/releases/download/v1.0.0/headlamp-polaris-1.0.0.tar.gz"
   headlamp/plugin/version-compat: ">=0.26"
-  headlamp/plugin/archive-checksum: sha256:ce75449a05d3d3dd3c546db36a2257fae3e4601e466108182e64310a1a4f6d71
+  headlamp/plugin/archive-checksum: sha256:a165e871b40f11a44950aa9f10eb7f7883276f749026ae7a4f886278ecd9bd7d
   headlamp/plugin/distro-compat: "in-cluster,web,desktop"