chore(deps): bump actions/upload-artifact from 4 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/image-build-pr-check.yml

@@ -51,7 +51,7 @@ jobs:
         docker rm -f pluginRegistry
         cp root-dir/v3/plugins/index.json root-dir/index.json
         tar zcvf content.tgz -C root-dir .
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v6
       with:
         name: plugin-registry-content
         path: content.tgz
@@ -64,11 +64,11 @@ jobs:
        run: |
          echo "${{ github.event.number }}" > PR_NUMBER
          echo "${{ github.event.pull_request.head.sha }}" > PR_SHA
-     - uses: actions/upload-artifact@v4
+     - uses: actions/upload-artifact@v6
        with:
          name: pull-request-number
          path: PR_NUMBER
-     - uses: actions/upload-artifact@v4
+     - uses: actions/upload-artifact@v6
        with:
          name: pull-request-sha
          path: PR_SHA

.github/workflows/smoke-test-pr-check.yaml

@@ -120,14 +120,14 @@ jobs:
 
       - name: Store e2e artifacts
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: e2e-artifacts
           path: /tmp/tests
 
       - name: Store k8s logs
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: k8s-logs
           path: /tmp/devworkspace-happy-path-artifacts/admin-che-info