@ update workflows : branch v3 specific.

Author: elmbeech

.github/workflows/apple.yml

@@ -7,7 +7,7 @@ run-name: ${{ github.actor }}::pytest pcdl library on mac os x; the latest pytho
 
 on:
   push:
-    branches: ["v3"]  # ["master", "utest", "v4"]
+    branches: ["v3"]  # only!
 
 jobs:
   build-macosx:

.github/workflows/linux.yml

@@ -7,7 +7,7 @@ run-name: ${{ github.actor }}::pytest pcdl library on linux os; all python3 vers
 
 on:
   push:
-    branches: ["v3"]  # ["master", "utest", "v4"]
+    branches: ["v3"]  # only!
 
 jobs:
   build-linux:

.github/workflows/windows.yml

@@ -7,7 +7,7 @@ run-name: ${{ github.actor }}::pytest pcdl library on windows os; the latest pyt
 
 on:
   push:
-    branches: ["v3"]  # ["master", "utest", "v4"]
+    branches: ["v3"]  # only!
 
 jobs:
   build-windows: