Bump pydantic from 2.4.2 to 2.6.0

Bumps [pydantic](https://github.com/pydantic/pydantic) from 2.4.2 to 2.6.0.
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.4.2...v2.6.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 pymatgen==2023.12.18
 emmet-core==0.76.2
-pydantic==2.4.2
+pydantic==2.6.0
 pydantic-core==2.10.1
 pydantic-settings==2.0.3
 typing-extensions==4.9.0