Update slsa-framework/slsa-github-generator action to v2

Author: renovate[bot]

.github/workflows/go-ossf-slsa3-publish.yml

@@ -29,7 +29,7 @@ jobs:
       id-token: write # To sign.
       contents: write # To upload release assets.
       actions: read   # To read workflow path.
-    uses: slsa-framework/slsa-github-generator/.github/workflows/builder_go_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/builder_go_slsa3.yml@v2.1.0
     with:
       go-version: 1.21
       # =============================================================================================================