Bump slsa-framework/slsa-github-generator from 1.5.0 to 1.6.0 (#1213)

Author: davidism

.github/workflows/publish.yaml

@@ -38,7 +38,7 @@ jobs:
       id-token: write
       contents: write
     # Can't pin with hash due to how this workflow works.
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.5.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.6.0
     with:
       base64-subjects: ${{ needs.build.outputs.hash }}
   create-release: