(fix): ci node version

Author: Jipperism

.github/workflows/deploy-defender.yml

@@ -36,7 +36,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           cache: "pnpm"
-          node-version: "18.x"
+          node-version: "18.18.0"
       - name: Install
         run: pnpm install --frozen-lockfile
       - name: Deploy Defender infra to testnets