Bump tzlocal from 4.2 to 4.3

Bumps [tzlocal](https://github.com/regebro/tzlocal) from 4.2 to 4.3.
- [Release notes](https://github.com/regebro/tzlocal/releases)
- [Changelog](https://github.com/regebro/tzlocal/blob/master/CHANGES.txt)
- [Commits](regebro/tzlocal@4.2...4.3)

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

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

requirements.txt

@@ -175,7 +175,7 @@ typing-extensions==4.5.0
     # via qrcode
 tzdata==2022.7
     # via pytz-deprecation-shim
-tzlocal==4.2
+tzlocal==4.3
     # via pyhanko
 uritools==4.0.1
     # via pyhanko-certvalidator