chore(deps): update actions/attest-build-provenance digest to e8998f9

Author: renovate[bot]

.github/workflows/pipeline.yml

@@ -251,7 +251,7 @@ jobs:
           path: bins
           pattern: bins-*
       - name: Attest binaries
-        uses: actions/attest-build-provenance@db473fddc028af60658334401dc6fa3ffd8669fd # v2
+        uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2
         with:
           subject-path: bins/**/*
       - name: Sign binaries