chore(ci): update attest-build-provenance to v4.1.0

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: nanotaboada

.github/workflows/maven-cd.yml

@@ -105,7 +105,7 @@ jobs:
                       ghcr.io/${{ github.repository }}:${{ steps.tag.outputs.club }}
 
             - name: Attest build provenance
-              uses: actions/attest-build-provenance@v2
+              uses: actions/attest-build-provenance@v4.1.0
               with:
                   subject-name: ghcr.io/${{ github.repository }}
                   subject-digest: ${{ steps.push.outputs.digest }}