chore: replace '::set-output' with '>> $GITHUB_OUTPUT' (#3764)

* chore: replace '::set-output' with '>> $GITHUB_OUTPUT'

* trigger docs pipeline when yml changed

Author: yihau

.github/workflows/pull-request-docs.yml

@@ -4,10 +4,12 @@ on:
   pull_request:
     paths:
     - 'docs/**'
+    - '.github/workflows/pull-request-docs.yml'
   push:
     branches: [master]
     paths:
     - 'docs/**'
+    - '.github/workflows/pull-request-docs.yml'
 
 jobs:
   all_github_action_checks:
@@ -33,13 +35,13 @@ jobs:
         id: check_files
         run: |
           echo "========== check paths of modified files =========="
-          echo "::set-output name=run_all_github_action_checks::true"
+          echo "run_all_github_action_checks=true" >> $GITHUB_OUTPUT
           git diff --name-only HEAD^ HEAD > files.txt
           while IFS= read -r file
           do
             if [[ $file != docs/** ]]; then
               echo "Found modified non-'docs' file(s)"
-              echo "::set-output name=run_all_github_action_checks::false"
+              echo "run_all_github_action_checks=false" >> $GITHUB_OUTPUT
               break
             fi
           done < files.txt