chore: update claude-code-base-action to v0.0.21

Author: actions-user

action.yml

@@ -110,7 +110,7 @@ runs:
     - name: Run Claude Code
       id: claude-code
       if: steps.prepare.outputs.contains_trigger == 'true'
-      uses: anthropics/claude-code-base-action@f481f924b73a7085d9efea0e50a3ba171ed1d74b # v0.0.20
+      uses: anthropics/claude-code-base-action@cef27f3f006b4c6e8394105604f63f20e84ae300 # v0.0.21
       with:
         prompt_file: ${{ runner.temp }}/claude-prompts/claude-prompt.txt
         allowed_tools: ${{ env.ALLOWED_TOOLS }}