Update structlog requirement from ~=23.2.0 to ~=23.3.0 (#22)

Updates the requirements on [structlog](https://github.com/hynek/structlog) to permit the latest version.
- [Release notes](https://github.com/hynek/structlog/releases)
- [Changelog](https://github.com/hynek/structlog/blob/main/CHANGELOG.md)
- [Commits](hynek/structlog@23.2.0...23.3.0)

---
updated-dependencies:
- dependency-name: structlog
  dependency-type: direct:production
...

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

requirements.txt

@@ -3,4 +3,4 @@ sulguk==0.7.0
 pydantic-settings==2.1.0
 pyaml==23.9.7
 uvloop==0.19.0; sys_platform == 'linux'
-structlog~=23.2.0
+structlog~=23.3.0