try dynamic node version in ci

.github/workflows/compatibility.yml

@@ -93,19 +93,41 @@ jobs:
       - name: Test `@langchain/community` with latest deps
         run: docker compose -f dependency_range_tests/docker-compose.yml run community-latest-deps
 
+  # community-lowest-deps:
+  #   runs-on: ubuntu-latest
+  #   needs: get-changed-files
+  #   if: contains(needs.get-changed-files.outputs.changed_files, 'libs/langchain-community/')
+  #   steps:
+  #     - uses: actions/checkout@v4
+  #     - name: Use Node.js ${{ env.NODE_VERSION }}
+  #       uses: actions/setup-node@v3
+  #       with:
+  #         node-version: ${{ env.NODE_VERSION }}
+  #         cache: "yarn"
+  #     - name: Install dependencies
+  #       run: yarn install --immutable
+  #     - name: Build `@langchain/standard-tests`
+  #       run: yarn build --filter=@langchain/standard-tests
+  #     - name: Test `@langchain/community` with lowest deps
+  #       run: docker compose -f dependency_range_tests/docker-compose.yml run community-lowest-deps
+
   community-lowest-deps:
     runs-on: ubuntu-latest
     needs: get-changed-files
     if: contains(needs.get-changed-files.outputs.changed_files, 'libs/langchain-community/')
     steps:
       - uses: actions/checkout@v4
-      - name: Use Node.js ${{ env.NODE_VERSION }}
+      - name: Use Node.js 20 for installation
         uses: actions/setup-node@v3
         with:
-          node-version: ${{ env.NODE_VERSION }}
+          node-version: '20'
           cache: "yarn"
       - name: Install dependencies
         run: yarn install --immutable
+      - name: Switch to Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
       - name: Build `@langchain/standard-tests`
         run: yarn build --filter=@langchain/standard-tests
       - name: Test `@langchain/community` with lowest deps