chore(deps): update 1password/install-cli-action action to v4

Author: renovate[bot]

.github/actions/1password-secret-sync/action.yml

@@ -37,7 +37,7 @@ runs:
   steps:
     - name: Install 1Password CLI
       # Pin to commit SHA for supply chain security — update when action changes
-      uses: 1password/install-cli-action@9a0c9dd934086b7ab1d90115d455bda1c53c2bdb # v2.0.2
+      uses: 1password/install-cli-action@a5215d3a7f75c1629216c465ea9ab3ab399c4b71 # v4.0.0
 
     - name: Sync secrets
       id: sync