Bump pydantic-settings from 2.3.4 to 2.4.0

Bumps [pydantic-settings](https://github.com/pydantic/pydantic-settings) from 2.3.4 to 2.4.0.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.3.4...v2.4.0)

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

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

requirements/prod.txt

@@ -1,5 +1,5 @@
 fastapi[all]==0.111.1
-pydantic-settings==2.3.4
+pydantic-settings==2.4.0
 redis[hiredis]==5.0.7
 safe-eth-py==6.0.0b35
 siwe==4.2.0