chore(deps): update actions/attest-build-provenance action to v4 (#109)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/CI.yaml

@@ -168,7 +168,7 @@ jobs:
         steps:
             - uses: actions/download-artifact@v7
             - name: Generate artifact attestation
-              uses: actions/attest-build-provenance@v3
+              uses: actions/attest-build-provenance@v4
               with:
                   subject-path: 'wheels-*/*'
             - name: Publish to PyPI