Bump pytz from 2023.3 to 2023.3.post1 (#2535)

Bumps [pytz](https://github.com/stub42/pytz) from 2023.3 to 2023.3.post1.
- [Commits](stub42/pytz@release_2023.3...release_2023.3.post1)

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

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

requirements.txt

@@ -16,7 +16,7 @@ marshmallow==3.20.1
 psycopg2==2.9.7
 pylast==5.2.0
 pyOpenSSL==23.2.0 # for twisted.internet.ssl
-pytz==2023.3
+pytz==2023.3.post1
 rapidfuzz==3.2.0
 redis==5.0.0
 regex==2023.8.8