feat: support release attestations (#517)

## Summary

Reverts #514

This adds back support for release attestations after asset uploads.

Turns out extended glob is not supported via subject-path given how the
action searches the directories and applies the glob, so instead we
declare multiple simple globs since subject-path supports that too.

## Test Plan

A full release was tested with about 155 artifacts (had to limit release
triplets since free runners have limited resources) which resulted in 76
subjects created due to filtering.

See release here:
https://github.com/samypr100/python-build-standalone/releases/tag/20250205

See run here:
https://github.com/samypr100/python-build-standalone/actions/runs/13220724442/job/36905418053

See attestations here:
https://github.com/samypr100/python-build-standalone/attestations/4870998

.github/workflows/release.yml

@@ -78,3 +78,12 @@ jobs:
       # Uploading the relevant artifact to the GitHub release.
       - run: just release-run ${{ secrets.GITHUB_TOKEN }} ${{ github.event.inputs.sha }} ${{ github.event.inputs.tag }}
         if: ${{ github.event.inputs.dry-run == 'false' }}
+
+      # We filter by *.tar.@(zst|gz) since actions/attest-build-provenance only supports up to 1024 subjects
+      - name: Generate attestations
+        uses: actions/attest-build-provenance@v2
+        if: ${{ github.event.inputs.dry-run == 'false' }}
+        with:
+          subject-path: |
+            dist/*.tar.gz
+            dist/*.tar.zst