ci: bump actions/upload-artifact from 4.3.6 to 4.4.0

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.6 to 4.4.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@834a144...5076954)

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

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

.github/workflows/build-images-release.yaml

@@ -76,7 +76,7 @@ jobs:
 
       # Upload artifact digests
       - name: Upload artifact digests
-        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a
+        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
         with:
           name: image-digest ${{ matrix.name }}
           path: image-digest
@@ -122,15 +122,15 @@ jobs:
 
       # Upload artifact digests
       - name: Upload artifact digests
-        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a
+        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
         with:
           name: image-digest-output.txt-${{ steps.tag.outputs.tag }}
           path: image-digest-output.txt
           retention-days: 1
 
       # Upload artifact digests
       - name: Upload artifact digests
-        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a
+        uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874
         with:
           name: Makefile.digests-${{ steps.tag.outputs.tag }}
           path: Makefile.digests