Bump pandas from 2.1.4 to 2.2.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 2.1.4 to 2.2.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Commits](https://github.com/pandas-dev/pandas/compare/v2.1.4...v2.2.1)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 numpy==1.26.4
-pandas==2.1.4
+pandas==2.2.1
 pandas-ta==0.3.14b
 
 ccxt==4.2.51