git: Run workflows on release branches

.github/workflows/build.yml

@@ -2,7 +2,9 @@ name: Build
 
 on:
   push:
-    branches: ["*"]
+    branches:
+      - 'master'
+      - 'releases/**'
   pull_request:
   workflow_dispatch:
 

.github/workflows/build_web.yml

@@ -2,7 +2,9 @@ name: Build for the web
 
 on:
   push:
-    branches: ["*"]
+    branches:
+      - 'master'
+      - 'releases/**'
   pull_request:
   workflow_dispatch:
 

.github/workflows/tests.yml

@@ -2,8 +2,13 @@ name: "Unit Tests"
 
 on:
   push:
-    branches: ["*"]
+    branches:
+      - 'master'
+      - 'releases/**'
   pull_request:
+    branches:
+      - 'master'
+      - 'releases/**'
   workflow_dispatch:
 
 jobs: