chore(deps): update chainguard-dev/actions digest to b99da5d

Author: renovate[bot]

.github/workflows/bump-version.yaml

@@ -120,7 +120,7 @@ jobs:
 
       - name: Setup Gitsign
         if: steps.command.outputs.command-name == 'bump'
-        uses: chainguard-dev/actions/setup-gitsign@f45211d3e8f9d2676c6b8cdd6a765435e06c819d # main
+        uses: chainguard-dev/actions/setup-gitsign@b99da5d8b7e24fd936d011a8288e7f8deee229bd # main
 
       - name: Commit pre-commit changes
         if: steps.command.outputs.command-name == 'bump'