WIP: refactor(CHANGELOG): expand default pull_request triggers

Author: ErichDonGubler

.github/workflows/changelog.yml

@@ -3,6 +3,10 @@ on:
  paths:
  - 'CHANGELOG.md'
  - 'xtask/**/*'
+ types:
+ - opened
+ - synchronize
+ - reopened
 
 env:
  #