Add team_foreman to contrib/inventory/foreman.py (#59178)

This will allow team_foreman to merge fixes, but mostly I'd prefer to
close as wontfix to point users to the inventory plugin that also
exists.

.github/BOTMETA.yml

@@ -544,6 +544,8 @@ files:
     support: community
   contrib/inventory/digital_ocean.py: *digital_ocean
   contrib/inventory/docker: *docker
+  contrib/inventory/foreman.py:
+    maintainers: $team_foreman
   contrib/inventory/linode:
     keywords:
       - linode dynamic inventory script