fix(ci): trigger PR actions for all target branches (#357)

Author: jenstroeger

.github/workflows/pr-change-set.yaml

@@ -5,8 +5,7 @@ name: Check change set
 on:
   pull_request:
     branches:
-    - main
-    - staging
+    - '*'
     types:
     - opened
     - reopened

.github/workflows/pr-conventional-commits.yaml

@@ -7,8 +7,7 @@ name: Check conventional commits
 on:
   pull_request:
     branches:
-    - main
-    - staging
+    - '*'
     types:
     - opened
     - reopened