Remove target branch from CI runnning on PRs (#1593)

Author: jgonet

.github/workflows/android-build.yml

@@ -1,8 +1,6 @@
 name: Test Android build
 on:
   pull_request:
-    branches:
-      - master
     paths:
       - 'android/**'
   push:

.github/workflows/ios-build.yml

@@ -1,8 +1,6 @@
 name: Test iOS build
 on:
   pull_request:
-    branches: 
-      - master
     paths:
       - 'ios/**'
   push:

.github/workflows/static-example-app-checks.yml

@@ -1,8 +1,6 @@
 name: Test Example App TypeScript and Lint
 on:
   pull_request:
-    branches:
-      - master
     paths:
       - 'examples/Example/**'
   push:

.github/workflows/static-root-checks.yml

@@ -1,8 +1,6 @@
 name: Test TypeScript and Lint
 on:
   pull_request:
-    branches: 
-      - master
     paths:
       - 'src/**'
       - '*'
@@ -12,7 +10,7 @@ on:
 jobs:
   check:
     runs-on: ubuntu-latest
-    concurrency: 
+    concurrency:
       group: static-root-${{ github.ref }}
       cancel-in-progress: true
     steps: