modules/notification/irc: Fix channel joining for some IRC servers. #55444
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SUMMARY
Fix channel joining for some IRC servers.
Some IRC servers may return the channel in a different case than
requested. For instance, you might request "foo" but the server
returns "FOO". The regular expression matching must be case-insensitive
for the join response in order to handle this.
ISSUE TYPE
COMPONENT NAME
modules/notification/irc
ADDITIONAL INFORMATION
Prior ticket here that was never resolved: ansible/ansible-modules-extras#429