chore: Limit typecheck's concurrency to avoid OOMs (RocketChat#39697)

Author: KevLehman

.github/workflows/ci-code-check.yml

@@ -77,7 +77,7 @@ jobs:
 
       - name: TS TypeCheck
         if: matrix.check == 'ts'
-        run: yarn turbo run typecheck
+        run: yarn turbo run typecheck --concurrency=5
 
       - name: Cache eslint
         uses: actions/cache@v5