Bump pandas from 2.2.3 to 2.3.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 2.2.3 to 2.3.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Commits](pandas-dev/pandas@v2.2.3...v2.3.1)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -24,7 +24,7 @@ dependencies = [
   "scipy==1.13.1",
   "matplotlib==3.9.4",
   "pdb-tools==2.5.0",
-  "pandas==2.2.3",
+  "pandas==2.3.1",
   "openpyxl==3.1.5",
   "plotly==6.0.1",
   "pdbecif==1.5",