[pip](deps): Bump msgspec from 0.18.5 to 0.18.6

Bumps [msgspec](https://github.com/jcrist/msgspec) from 0.18.5 to 0.18.6.
- [Release notes](https://github.com/jcrist/msgspec/releases)
- [Commits](jcrist/msgspec@0.18.5...0.18.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -10,5 +10,5 @@ click==8.1.7
 typing-extensions==4.9.0
 environs==10.3.0
 async-lru==2.0.4
-msgspec==0.18.5
+msgspec==0.18.6
 jishaku==2.5.2