Fix: main is used instead of master, only builds for feature/action

Accidentally used main instead of master in the workflow.
Also hardcoded feature/action as the only feature branch that triggers a
build, instead any feature branch will now trigger a build.

.gitea/workflows/build.yml

@@ -3,8 +3,8 @@ name: Build and deploy automation_rs
 on:
     push:
         branches:
-            - main
-            - feature/actions
+            - master
+            - feature/**
 
 jobs:
     build: