Bump irc from 20.1.0 to 20.3.0 (#2520)

Bumps [irc](https://github.com/jaraco/irc) from 20.1.0 to 20.3.0.
- [Release notes](https://github.com/jaraco/irc/releases)
- [Changelog](https://github.com/jaraco/irc/blob/main/NEWS.rst)
- [Commits](jaraco/irc@v20.1.0...v20.3.0)

---
updated-dependencies:
- dependency-name: irc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -5,7 +5,7 @@ colorama==0.4.6
 cssmin==0.2.0
 Flask==2.3.3
 Flask-Assets==2.0
-irc==20.1.0
+irc==20.3.0
 isodate==0.6.1
 Jinja2==3.1.2
 jsmin==3.0.1