[PR #10505/0f7cd547 backport][stable-11] arg_spec adjustments: modules [g-j]* (#10528)

arg_spec adjustments: modules [g-j]* (#10505)

* arg_spec adjustments: modules [g-j]*

* add changelog frag

(cherry picked from commit 0f7cd5473f)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

plugins/modules/gitlab_project_variable.py

@@ -394,11 +394,11 @@ def main():
     argument_spec.update(auth_argument_spec())
     argument_spec.update(
         project=dict(type='str', required=True),
-        purge=dict(type='bool', required=False, default=False),
-        vars=dict(type='dict', required=False, default=dict(), no_log=True),
+        purge=dict(type='bool', default=False),
+        vars=dict(type='dict', default=dict(), no_log=True),
         # please mind whenever changing the variables dict to also change module_utils/gitlab.py's
         # KNOWN dict in filter_returned_variables or bad evil will happen
-        variables=dict(type='list', elements='dict', required=False, default=list(), options=dict(
+        variables=dict(type='list', elements='dict', default=list(), options=dict(
             name=dict(type='str', required=True),
             value=dict(type='str', no_log=True),
             masked=dict(type='bool', default=False),