[CI] auto-cancel in-progress PR CI when new commits are pushed (#956)

.github/workflows/amd_ci.yml

 name: CI Test on AMD
 on: [pull_request]
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 env:
   PYTHON_VERSION: '3.12'
   VENV_DIR: tilelang_ci
@@ -11,7 +15,7 @@ jobs:
     runs-on: [self-hosted, amd, gpu]
 
     permissions:
-      contents: write 
+      contents: write
 
     steps:
     - name: Checkout repository
@@ -84,7 +88,7 @@ jobs:
         set -e
         REQS_HASH=$(sha256sum requirements-rocm.txt | cut -d ' ' -f 1)
         MARKER="${{ runner.tool_cache }}/.venv_marker_${{ env.PYTHON_VERSION }}_${REQS_HASH:0:8}"
-        
+
         echo "Installing requirements"
         if [[ -f "$MARKER" ]] && [[ -f "${{ runner.tool_cache }}/${{ env.VENV_DIR }}/bin/activate" ]]; then
           echo "venv exists and hash matches – reuse it"

.github/workflows/bot.yml

 name: Bot
 
-on: 
+on:
   issue_comment:
     types: [created]
 
@@ -36,7 +36,7 @@ jobs:
       - name: Build original version
         run: |
           echo "Check files to be deleted!"
-          git clean -dxn | grep -v 'tll/' | xargs -I{} echo {} 
+          git clean -dxn | grep -v 'tll/' | xargs -I{} echo {}
           git clean -dxn | grep -v 'tll/' | xargs -I{} rm -rf {}
           echo "Delete files completed!"
           git checkout main

.github/workflows/ci.yml

 name: CI
 on: [pull_request]
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 env:
   PYTHON_VERSION: '3.12'
   VENV_DIR: tilelang_ci
@@ -10,7 +14,7 @@ jobs:
     runs-on: [self-hosted, nvidia]
 
     permissions:
-      contents: write 
+      contents: write
 
     steps:
     - name: Checkout repository

.github/workflows/metal_ci.yml

 name: CI Test on Metal
 on: [pull_request]
 
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 env:
   PYTHON_VERSION: '3.12'
   VENV_DIR: tilelang_ci
@@ -10,7 +14,7 @@ jobs:
     runs-on: [macos-latest]
 
     permissions:
-      contents: write 
+      contents: write
 
     steps:
     - name: Checkout repository

.github/workflows/publish_docs.yml

@@ -41,4 +41,3 @@ jobs:
           else
             echo "No changes detected, skipping commit and push."
           fi
-

.github/workflows/reminder.yml

@@ -20,4 +20,4 @@ jobs:
                 '🚀'
             })
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file