Cancel redundant GHA workflows (#10451)

.github/workflows/release-artifacts.yml

@@ -12,6 +12,10 @@ on:
     # we do the full build on tags.
     tags: ["v*"]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+  
 permissions:
   contents: write
 

.github/workflows/tests.yml

@@ -5,6 +5,10 @@ on:
     branches: ["develop", "release-*"]
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+  
 jobs:
   lint:
     runs-on: ubuntu-latest