ci: replace issues-helper specific version with v2

Author: meteorlxy

.github/workflows/issue-commented.yml

@@ -10,7 +10,7 @@ jobs:
     if: contains(github.event.issue.labels.*.name, 'stale')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'remove-labels'
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/issue-daily.yml

@@ -9,7 +9,7 @@ jobs:
     name: label stale issues
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'check-inactive'
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -23,7 +23,7 @@ jobs:
     name: close stale issues
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'close-issues'
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -34,7 +34,7 @@ jobs:
     name: close need-reproduction issues
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'close-issues'
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/issue-labeled.yml

@@ -10,7 +10,7 @@ jobs:
     if: github.event.label.name == 'invalid'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'close-issue, create-comment'
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -22,7 +22,7 @@ jobs:
     if: github.event.label.name == 'need reproduction'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-cool/issues-helper@v2.4.0
+      - uses: actions-cool/issues-helper@v2
         with:
           actions: 'create-comment'
           token: ${{ secrets.GITHUB_TOKEN }}