ci(action): update actions/attest-build-provenance action to v3.2.0

Author: descope[bot]

.github/actions/pack/action.yml

@@ -165,7 +165,7 @@ runs:
         format: "table"
         exit-code: ${{ inputs.fail_on_vulnerabilities == 'true' && '1' || '0' }}
     - name: Attest
-      uses: actions/attest-build-provenance@00014ed6ed5efc5b1ab7f7f34a39eb55d41aa4f8 # v3.1.0
+      uses: actions/attest-build-provenance@96278af6caaf10aea03fd8d33a09a777ca52d62f # v3.2.0
       id: attest
       with:
         subject-name: ghcr.io/descope/${{steps.setup_build_args.outputs.repo_name}}