updated workflow to avoid set-output command (#1397)

updated the GitHub Actions workflow to use the new
Environment Files approach instead of the deprecated set-output command.

Author: samplecatalina

.github/workflows/test.yml

@@ -90,7 +90,9 @@ jobs:
     - name: Store repository status
       id: status-before
       run: |
-        echo "::set-output name=BEFORE::$(git status --porcelain -b)"
+        git_status=$(git status --porcelain -b)
+        echo "BEFORE=$git_status" >> $GITHUB_ENV
+        echo "Repository status before tests: $git_status"
     - name: Show installed dependencies
       run: python -m pip list
     - name: Run tests on Ubuntu
@@ -108,7 +110,7 @@ jobs:
     - name: Check for files left behind by test
       if: matrix.os != 'windows-latest' && always()
       run: |
-        before="${{ steps.status-before.outputs.BEFORE }}"
+        before="${{ env.BEFORE }}"
         after="$(git status --porcelain -b)"
         if [[ "$before" != "$after" ]]; then
             echo "git status from before: $before"