Override fail-fast of GHA shell

From https://github.com/orgs/community/discussions/46992#discussioncomment-4961541

This should allow us to populate the appropriate env vars even if the label-analysis step fails.
Which is not the case currently (see https://github.com/giovanni-guidini/sentry/actions/runs/6409333248/job/17400305852)

.github/workflows/codecov_ats.yml

@@ -89,6 +89,7 @@ jobs:
           id: label_analysis
           continue-on-error: true
           run: |
+            set +e
             BASE_COMMIT=$(git rev-parse ${{ github.sha }}^)
             echo $BASE_COMMIT
             output=$(codecovcli --codecov-yml-path=codecov.yml label-analysis --dry-run --token=${CODECOV_STATIC_TOKEN} --base-sha=${BASE_COMMIT})