chore: bump version to 0.3.8

Fix release workflow immutability issues.

Release includes:
- Drawer opacity fix for namespace detail view (#12)
- Plugin display name change to 'polaris' (#9)
- Repository metadata in package.json (#11)
- E2E tests using on-prem k3s-animaniacs runners (#10)

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

artifacthub-pkg.yml

@@ -1,4 +1,4 @@
-version: 0.3.7
+version: 0.3.8
 name: headlamp-polaris-plugin
 displayName: Polaris
 createdAt: "2026-02-05T19:00:00Z"
@@ -28,7 +28,7 @@ maintainers:
   - name: cpfarhood
     email: "chris@farhood.org"
 annotations:
-  headlamp/plugin/archive-url: "https://github.com/cpfarhood/headlamp-polaris-plugin/releases/download/v0.3.7/polaris-0.3.7.tar.gz"
+  headlamp/plugin/archive-url: "https://github.com/cpfarhood/headlamp-polaris-plugin/releases/download/v0.3.8/polaris-0.3.8.tar.gz"
   headlamp/plugin/version-compat: ">=0.26"
-  headlamp/plugin/archive-checksum: sha256:09d199ffc2705fae1c69baef39acf5bfa9aa39b7544c9e680a80fafe8c946fa0
+  headlamp/plugin/archive-checksum: sha256:109720d9ab5cf425fbf18619371b34f4eb555983b2877cce2eee0de2ce862a67
   headlamp/plugin/distro-compat: in-cluster