chore(deps): bump pandas from 2.3.0 to 2.3.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Commits](https://github.com/pandas-dev/pandas/compare/v2.3.0...v2.3.1)

---
updated-dependencies:
- dependency-name: pandas
  dependency-version: 2.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,5 +1,5 @@
 numpy==2.3.1
-pandas==2.3.0
+pandas==2.3.1
 bottleneck==1.5.0
 numexpr==2.11.0
 # Indicator libraries