Update pydantic requirement from <2.5.3,>=2.0 to >=2.0,<2.5.4

Updates the requirements on [pydantic](https://github.com/pydantic/pydantic) to permit the latest version.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.0...v2.5.3)

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

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

pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
   # Don't forget to sync changes between environment.yml, environment-dev.yml, and pyproject.toml!
   "numpy",
   "pooch>=1.8.0",
-  "pydantic>=2.0,<2.5.3",
+  "pydantic>=2.0,<2.5.4",
   "statsmodels",
   "xarray",
   "xclim>=0.47.0",