Temporary fix for SLSA generators (#7636)

* Temporary fix for SLSA generators

Sigstore made a breaking change as part of their recent GA announcement. We need a temporary fix to avoid builder failure (see slsa-framework/slsa-github-generator#1163)

/cc @asraa

* Update build.yml

.github/workflows/build.yml

@@ -526,7 +526,8 @@ jobs:
       actions: read   # To read the workflow path.
       id-token: write # To sign the provenance.
       contents: write # To add assets to a release.
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.2.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.2.1
     with:
       base64-subjects: "${{ needs.release-digests.outputs.digests }}"
       upload-assets: true # Optional: Upload to a new release
+      compile-generator: true # Workaround for https://github.com/slsa-framework/slsa-github-generator/issues/1163