ci: backport workflow fixes from graphql-js

Author: IvanGoncharov

.github/workflows/ci.yml

@@ -84,7 +84,6 @@ jobs:
 
           rm gitignore/Global/ModelSim.gitignore
           rm gitignore/Global/Images.gitignore
-          rm gitignore/Global/VirtualEnv.gitignore
           cat gitignore/Node.gitignore gitignore/Global/*.gitignore > all.gitignore
 
           IGNORED_FILES=$(git ls-files --cached --ignored --exclude-from=all.gitignore)
@@ -113,6 +112,9 @@ jobs:
       - name: Install Dependencies
         run: npm ci --ignore-scripts
 
+      - name: Check that package-lock.json doesn't have conflicts
+        run: npm ls --depth 999
+
       - name: Run npm install
         run: npm install --ignore-scripts --force --package-lock-only --engine-strict --strict-peer-deps