chore: attestation fix token

Signed-off-by: fastlorenzo <git@bernardi.be>

Author: fastlorenzo

.github/workflows/publish-chart.yaml

@@ -75,6 +75,8 @@ jobs:
         with:
           subject-path: .cr-release-packages/${{ steps.extract_chart_name.outputs.chart_name }}-${{ github.event.inputs.version }}.tgz
           subject-checksums: .cr-release-packages/${{ steps.extract_chart_name.outputs.chart_name }}-${{ github.event.inputs.version }}.checksums.txt
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Get Release
         uses: octokit/request-action@v2.x