ci: trigger cherry-pick/backport by labels on PR (#499) (#500)

Signed-off-by: Lin Yang <[email protected]>
(cherry picked from commit 77f6c3b)

.github/workflows/backport.yml

@@ -13,7 +13,7 @@ jobs:
   backport_v1_4:
     runs-on: ubuntu-latest
     name: Backport into release/v1.4
-    if: ${{ !startsWith(github.event.pull_request.title, '[cherry-pick]') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
+    if: ${{ contains(github.event.pull_request.labels.*.name, 'needs-backport') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -23,7 +23,7 @@ jobs:
         uses: korthout/backport-action@v3
         with:
           copy_assignees: true
-          copy_labels_pattern: '[\s\S]+'
+          copy_labels_pattern: '^(?!needs-).*'
           copy_requested_reviewers: true
           github_token: ${{ secrets.WORKFLOW_PAT }}
           pull_title: '[backport] ${pull_title}'

.github/workflows/cherry-pick.yml

@@ -13,7 +13,7 @@ jobs:
   cherry_pick_main:
     runs-on: ubuntu-latest
     name: Cherry pick into main
-    if: ${{ !startsWith(github.event.pull_request.title, '[backport]') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
+    if: ${{ contains(github.event.pull_request.labels.*.name, 'needs-cherry-pick') && github.repository == 'flomesh-io/fsm' && github.event.pull_request.merged == true }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -23,7 +23,7 @@ jobs:
         uses: korthout/backport-action@v3
         with:
           copy_assignees: true
-          copy_labels_pattern: '[\s\S]+'
+          copy_labels_pattern: '^(?!needs-).*'
           copy_requested_reviewers: true
           github_token: ${{ secrets.WORKFLOW_PAT }}
           pull_title: '[cherry-pick] ${pull_title}'