Bump pandas from 2.2.0 to 2.2.1 in /requirements

Bumps [pandas](https://github.com/pandas-dev/pandas) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Commits](pandas-dev/pandas@v2.2.0...v2.2.1)

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

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

requirements/requirements_doc.txt

@@ -11,7 +11,7 @@ jupyterlab>=3.2.8
 matplotlib==3.8.2
 numpy==1.26.4
 numpydoc==1.6.0
-pandas==2.2.0
+pandas==2.2.1
 panel==1.3.8
 plotly==5.19.0
 pypandoc==1.12