Bump cmd2 from 2.4.3 to 2.5.3

Bumps [cmd2](https://github.com/python-cmd2/cmd2) from 2.4.3 to 2.5.3.
- [Release notes](https://github.com/python-cmd2/cmd2/releases)
- [Changelog](https://github.com/python-cmd2/cmd2/blob/master/CHANGELOG.md)
- [Commits](python-cmd2/cmd2@2.4.3...2.5.3)

---
updated-dependencies:
- dependency-name: cmd2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,4 +1,4 @@
-cmd2==2.4.3
+cmd2==2.5.3
 urllib3==2.2.3
 ratelimit==2.2.1
 tinydb==4.8.2

setup.py

@@ -35,7 +35,7 @@
         'Topic :: Utilities',
     ],
     install_requires=[
-        'cmd2==2.4.3',
+        'cmd2==2.5.3',
         'urllib3==2.2.3',
         'ratelimit==2.2.1',
         'tinydb==4.8.2',