fix: Update SLSA generator to v2.1.0 to fix deprecated actions

Update slsa-framework/slsa-github-generator from v1.10.0 to v2.1.0
to resolve the issue with deprecated actions/upload-artifact@v3.
The v2.1.0 version uses the latest actions and is recommended by
the SLSA framework documentation.

Co-authored-by: jacksonpradolima <7774063+jacksonpradolima@users.noreply.github.com>

Author: Copilot

.github/workflows/slsa-provenance.yml

@@ -55,7 +55,7 @@ jobs:
   provenance:
     name: Generate SLSA provenance
     needs: [build]
-    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
     permissions:
       actions: read
       contents: write