Use suggest-changes@v2 (microsoft#22667)

Use suggest-changes@v2
(parkerbxyz/suggest-changes#36 (comment))
to post suggested changes as comments instead of requested changes to
streamline the review process.

- Also updated the script to `set +e` to ignore exit code only for the
linter run. So that if there is errors in dependency installation we can
still get signals.

Author: justinchuby

.github/workflows/pr_checks.yml

@@ -41,10 +41,10 @@ jobs:
 
       - name: Install dependencies and run lintrunner on all files
         run: |
-          set -e
           python -m pip install --user -r requirements-dev.txt
-          python -m pip install --user lintrunner lintrunner-adapters	  
+          python -m pip install --user lintrunner lintrunner-adapters
           lintrunner init
+          set +e
           lintrunner f --all-files -v
           exit 0
       - uses: parkerbxyz/suggest-changes@v2