build(deps): bump actions/attest-build-provenance from 1 to 2 (#101)

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 1 to 2.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](actions/attest-build-provenance@v1...v2)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -57,7 +57,7 @@ jobs:
           CARGO_PROFILE_RELEASE_CODEGEN_UNITS: "1"
 
       - name: Generate build provenance attestations
-        uses: actions/attest-build-provenance@v1
+        uses: actions/attest-build-provenance@v2
         if: ${{ github.event_name != 'pull_request' }}
         with:
           subject-path: |
@@ -100,7 +100,7 @@ jobs:
         run: nix build --fallback --print-build-logs '.#nrr-static-${{ matrix.target }}'
 
       - name: Generate build provenance attestations
-        uses: actions/attest-build-provenance@v1
+        uses: actions/attest-build-provenance@v2
         if: ${{ github.event_name != 'pull_request' }}
         with:
           subject-path: ./result/bin/nrr