ci: replace github output with github env var

.github/workflows/e2e_test_for_prs.yml

@@ -6,8 +6,6 @@ jobs:
   check-changed-files:
     runs-on: ubuntu-20.04
     name: Check changed files
-    outputs:
-      NEED_TO_RUN_TESTS: ${{ steps.decision.outputs.NEED_TO_RUN_TESTS }}
     steps:
       - id: files
         uses: jitterbit/get-changed-files@b17fbb00bdc0c0f63fcf166580804b4d2cdc2a42
@@ -24,9 +22,10 @@ jobs:
             fi
           done
           echo $needToRunTests
-          echo NEED_TO_RUN_TESTS=${needToRunTests} >> $GITHUB_OUTPUT
+          echo NEED_TO_RUN_TESTS=${needToRunTests} >> $GITHUB_ENV
   run-e2e-for-topic-branch:
-    if: needs['check-changed-files'].outputs.NEED_TO_RUN_TESTS == 'true'
+    needs: check-changed-files
+    if: ${{ env.NEED_TO_RUN_TESTS }} == 'true'
     permissions:
       id-token: write # This is required for requesting the JWT
       contents: read  # This is required for actions/checkout