COMP: Cancel in-progress GitHub Actions worklows on repeated pushes

Author: jcfr

.github/workflows/linux.yml

@@ -2,6 +2,10 @@ name: linux-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   linux-build-gui:
 

.github/workflows/mac.yml

@@ -2,6 +2,10 @@ name: mac-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   mac-build-gui:
 

.github/workflows/windows.yml

@@ -2,6 +2,10 @@ name: windows-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
 
   windows-build-gui: