Update team for meta issue automation (#895)

Author: JonasKunz

.github/workflows/apm-agent-meta-issue-action.yml

@@ -26,7 +26,7 @@ jobs:
  id: checkUserMember
  with:
  username: ${{ github.actor }}
- team: 'apm'
+ team: 'observability'
  usernamesToExclude: |
  apmmachine
  GITHUB_TOKEN: ${{ steps.get_token.outputs.token }}