Bump actions/upload-artifact in /.github/actions/build-image

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3.1.3 to 4.4.2.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3.1.3...v4.4.2)

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

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

Author: dependabot[bot]

.github/actions/build-image/action.yaml

@@ -58,7 +58,7 @@ runs:
         touch "/tmp/digests/${{ inputs.target }}/ghcr/${digest#sha256:}"
 
     - name: Upload ghcr digest
-      uses: actions/upload-artifact@v3.1.3
+      uses: actions/upload-artifact@v4.4.2
       with:
         name: digests-${{ inputs.target }}-ghcr
         path: /tmp/digests/${{ inputs.target }}/ghcr/*
@@ -89,7 +89,7 @@ runs:
         touch "/tmp/digests/${{ inputs.target }}/dockerhub/${digest#sha256:}"
 
     - name: Upload dockerhub digest
-      uses: actions/upload-artifact@v3.1.3
+      uses: actions/upload-artifact@v4.4.2
       with:
         name: digests-${{ inputs.target }}-dockerhub
         path: /tmp/digests/${{ inputs.target }}/dockerhub/*