update workflows (#4076)

.github/workflows/ci-main-linux.yml

@@ -2,9 +2,9 @@ name: CI (Linux)
 
 on:
   push:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**' ]
   pull_request:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**' ]
 
 jobs:
   build:

.github/workflows/ci-main-mac.yml

@@ -2,9 +2,9 @@ name: CI (macOS)
 
 on:
   push:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**' ]
   pull_request:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**']
 
 jobs:
   build:

.github/workflows/ci-main.win.yml

@@ -2,9 +2,9 @@ name: CI (Windows)
 
 on:
   push:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**' ]
   pull_request:
-    branches: [ main, rel ]
+    branches: [ main, 'release/**' ]
 
 jobs:
   build: