ci: Trigger test workflow on release branches as well (#63)

Author: rm3l

.github/workflows/test.yml

@@ -2,12 +2,16 @@ name: CI
 
 on:
   push:
-    branches: [ "main" ]
+    branches:
+      - main
+      - release-1.[0-9]+
   pull_request:
-    branches: [ "main" ]
+    branches:
+      - main
+      - release-1.[0-9]+
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.number }}
+  group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs: