Rename single-filter plugins so that the filename equals the filter name. (#4625)

.github/BOTMETA.yml

@@ -126,7 +126,7 @@ files:
     maintainers: giner
   $filters/from_csv.py:
     maintainers: Ajpantuso
-  $filters/groupby.py:
+  $filters/groupby_as_dict.py:
     maintainers: felixfontein
   $filters/hashids.py:
     maintainers: Ajpantuso
@@ -137,7 +137,7 @@ files:
   $filters/jc.py:
     maintainers: kellyjonbrazil
   $filters/json_query.py: {}
-  $filters/list.py:
+  $filters/lists_mergeby.py:
     maintainers: vbotka
   $filters/random_mac.py: {}
   $filters/time.py:

changelogs/fragments/4625-fix-filter-filenames.yml

@@ -0,0 +1,2 @@
+breaking_changes:
+  - "lists_mergeby and groupby_as_dict filter plugins - adjust filter plugin filename. This change is not visible to end-users, it only affects possible other collections importing Python paths (https://github.com/ansible-collections/community.general/pull/4625)."