Revert "ci: disable automatic triggers for build and helm workflows"

This reverts commit f57fb5d1d6.

.github/workflows/build.yml

@@ -1,7 +1,11 @@
 name: Build + Publish
 
 on:
-  workflow_dispatch:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
 
 env:
   BASE_DEV_VERSION: 2.5.0

.github/workflows/helm.yml

@@ -1,6 +1,12 @@
 name: Helm Chart CI
 
 on:
+  # Triggers the workflow on push or pull request events but only for the dev branch
+  push:
+    branches: [ main ]
+    paths: [ dev/helm/** ]
+
+  # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
 jobs: