CI: Fix dependabot PR blocking job (#6787)

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: SMoraisAnsys

.github/workflows/ci_cd.yml

@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Exit if dependabot triggered the workflow
-        if: github.event.pull_request.user.login == 'dependabot[bot]'
+        if: github.triggering_actor == 'dependabot[bot]'
         run: |
           echo "::warning::Dependabot is not allowed to trigger this workflow. Please review carefully the changes before running the workflow manually."
           exit 1

doc/changelog.d/6787.maintenance.md

@@ -0,0 +1 @@
+Fix dependabot PR blocking job

zizmor.yml

@@ -0,0 +1,5 @@
+rules:
+  bot-conditions:
+    ignore:
+      # ignore line 81 in ci_cd.yml
+      - ci_cd.yml:81