Bump pandas from 2.1.0 to 2.1.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Commits](pandas-dev/pandas@v2.1.0...v2.1.1)

---
updated-dependencies:
- dependency-name: pandas
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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