[ci] Cancel CI jobs in progress

Author: salkinium

.github/workflows/test-kg.yml

@@ -9,6 +9,9 @@ on:
 jobs:
   generate-kg-stmicro:
     runs-on: ubuntu-latest
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-${{ matrix.family_group.name }}
+      cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
     strategy:
       fail-fast: false
       matrix:
@@ -27,7 +30,6 @@ jobs:
             families: [STM32H7]
 
     name: Update KG ${{ matrix.family_group.name }}
-
     steps:
       - name: Check out Repository
         uses: actions/checkout@v4
@@ -94,6 +96,9 @@ jobs:
     name: Merge all KGs into one Artifact
     runs-on: ubuntu-latest
     needs: generate-kg-stmicro
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-merge-kg-artifacts
+      cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
     steps:
       - name: Check out Repository
         uses: actions/checkout@v4