Prepare main for 7.0.0 (#6428)

* Bump version to 7.0.0.

* Remove deprecated parameters and change some defaults for 7.0.0.

* Remove deprecated alias.

* Adjust tests.

plugins/modules/puppet.py

@@ -114,8 +114,6 @@ options:
   show_diff:
     description:
       - Whether to print file changes details
-      - Alias C(show-diff) has been deprecated and will be removed in community.general 7.0.0.
-    aliases: ['show-diff']
     type: bool
     default: false
 requirements:
@@ -198,9 +196,7 @@ def main():
             noop=dict(type='bool'),
             logdest=dict(type='str', default='stdout', choices=['all', 'stdout', 'syslog']),
             # The following is not related to Ansible's diff; see https://github.com/ansible-collections/community.general/pull/3980#issuecomment-1005666154
-            show_diff=dict(
-                type='bool', default=False, aliases=['show-diff'],
-                deprecated_aliases=[dict(name='show-diff', version='7.0.0', collection_name='community.general')]),
+            show_diff=dict(type='bool', default=False),
             facts=dict(type='dict'),
             facter_basename=dict(type='str', default='ansible'),
             environment=dict(type='str'),