build(deps): Bump actions/upload-artifact from 4.4.0 to 4.4.3

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.4.0 to 4.4.3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@5076954...b4b15b8)

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

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

.github/workflows/router-build.yml

@@ -49,7 +49,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Archive run artifacts
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
+        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882
         with:
           name: dist
           path: |
@@ -92,7 +92,7 @@ jobs:
           ko resolve --platform=linux/arm64,linux/amd64 --push=false --tags ${KO_TAG},${KO_COMMIT},latest -BRf deploy/event-router-k8s.yaml > release.yaml
 
       - name: Archive run artifacts
-        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
+        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882
         with:
           name: release
           path: |