Bump pypubsub from 4.0.3 to 4.0.7

Bumps [pypubsub](https://github.com/schollii/pypubsub) from 4.0.3 to 4.0.7.
- [Release notes](https://github.com/schollii/pypubsub/releases)
- [Changelog](https://github.com/schollii/pypubsub/blob/master/docs/changelog.rst)
- [Commits](schollii/pypubsub@v4.0.3...v4.0.7)

---
updated-dependencies:
- dependency-name: pypubsub
  dependency-version: 4.0.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -95,7 +95,7 @@ pygments==2.19.2
     # via
     #   pytest
     #   rich
-pypubsub==4.0.3
+pypubsub==4.0.7
     # via meshtastic
 pyserial==3.5
     # via meshtastic