only cache if pnpm install is true

Author: delphiactual

.github/actions/setup-pnpm/action.yml

@@ -17,7 +17,7 @@ runs:
       uses: actions/setup-node@v6
       with:
         node-version-file: '.nvmrc'
-        cache: 'pnpm'  # This caches the pnpm store automatically
+        cache: ${{ inputs.install == 'true' && 'pnpm' || '' }}
 
     - name: Install dependencies
       if: inputs.install == 'true'