[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/irc.py

@@ -311,7 +311,7 @@ def main():
             server=dict(default='localhost'),
             port=dict(type='int', default=6667),
             nick=dict(default='ansible'),
-            nick_to=dict(required=False, type='list', elements='str'),
+            nick_to=dict(type='list', elements='str'),
             msg=dict(required=True),
             color=dict(default="none", aliases=['colour'], choices=["white", "black", "blue",
                                                                     "green", "red", "brown",
@@ -320,7 +320,7 @@ def main():
                                                                     "light_blue", "pink", "gray",
                                                                     "light_gray", "none"]),
             style=dict(default="none", choices=["underline", "reverse", "bold", "italic", "none"]),
-            channel=dict(required=False),
+            channel=dict(),
             key=dict(no_log=True),
             topic=dict(),
             passwd=dict(no_log=True),