[CI] Cancel Workflows After a Branch Update (#17)

This helps to reduce computational resource consumption and improves the time due to the fact that the resources are not occupied by an old commit. New processes get directly resources instead of waiting in a queue.

* Cancel workflow when update is pushed for `cmake-multi-platform.yml`
* Cancel workflow when update is pushed for `codeql.yml`

.github/workflows/cmake-multi-platform.yml

@@ -10,6 +10,10 @@ on:
   schedule:
     - cron: '30 2 * * *'  # Run once per day
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   QT_VERSION:     "6.2.0"
 

.github/workflows/codeql.yml

@@ -19,6 +19,10 @@ on:
   schedule:
     - cron: '31 8 * * 2'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   QT_VERSION:     "6.2.0"