fix: add compile-generator workaround for SLSA (#3848)

For jib cli release workflow, adds compile-generator: true workaround in addition to bumping slsa-github-generator to v1.2.1.

Author: emmileaf

.github/workflows/jib-cli-release.yml

@@ -119,6 +119,7 @@ jobs:
       contents: write # To add assets to a release.
     uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.2.1
     with:
+      compile-generator: true # Workaround for https://github.com/slsa-framework/slsa-github-generator/issues/1163
       base64-subjects: "${{ needs.release.outputs.hashes }}"
 
   upload: