[all] avoid double-running workflows when pushing to a PR branch

.github/workflows/c.yml

@@ -2,6 +2,9 @@ name: C
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'c/**'
     - '.github/workflows/c.yml'

.github/workflows/cpp.yml

@@ -2,6 +2,9 @@ name: C++
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'cpp/**'
     - '.github/workflows/cpp.yml'

.github/workflows/go.yml

@@ -2,6 +2,9 @@ name: Go
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'go/**'
     - '.github/workflows/go.yml'

.github/workflows/nim.yml

@@ -2,6 +2,9 @@ name: Nim
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'nim/**'
     - '.github/workflows/nim.yml'

.github/workflows/php.yml

@@ -2,6 +2,9 @@ name: PHP
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'php/**'
     - '.github/workflows/php.yml'

.github/workflows/pxd.yml

@@ -2,6 +2,9 @@ name: Cython
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'pxd/**'
     - '.github/workflows/pxd.yml'

.github/workflows/py.yml

@@ -2,6 +2,9 @@ name: Python
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'py/**'
     - '.github/workflows/py.yml'

.github/workflows/rs.yml

@@ -2,6 +2,9 @@ name: Rust
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'rs/**'
     - '.github/workflows/rs.yml'

.github/workflows/utils.yml

@@ -2,6 +2,9 @@ name: Utils
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'utils/**'
     - '.github/workflows/utils.yml'

.github/workflows/zig.yml

@@ -2,6 +2,9 @@ name: Zig
 
 on:
   push:
+    branches:
+    - master
+    - main
     paths:
     - 'zig/**'
     - '.github/workflows/zig.yml'