Make build.yml trigger for all release_* branches

To enable PR validation builds for all release_* branches in addition to
the develop branch.

Also remove v* tag trigger because it's not being used.

.github/workflows/build.yml

@@ -4,14 +4,12 @@ on:
  push:
  branches:
  - develop
- - release_4*
- tags:
- - v*
+ - 'release_*'
 
  pull_request:
  branches: 
  - develop
- - release_4*
+ - 'release_*'
 
 jobs:
  build: