set max_old_space_size on CI

Author: izumin5210

.github/workflows/ci.yml

@@ -35,6 +35,8 @@ jobs:
         node-version: 14.x
     - run: yarn --frozen-lockfile
     - run: yarn lint
+      env:
+        NODE_OPTIONS: "--max_old_space_size=4096"
     - run: yarn format
     - name: check generated code is up to date
       run: git diff --exit-code