[air](deps): Bump statsforecast in /python/requirements/ml

Bumps [statsforecast](https://github.com/Nixtla/statsforecast) from 1.7.0 to 2.0.3.
- [Release notes](https://github.com/Nixtla/statsforecast/releases)
- [Commits](Nixtla/statsforecast@v1.7.0...v2.0.3)

---
updated-dependencies:
- dependency-name: statsforecast
  dependency-version: 2.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

python/requirements/ml/tune-test-requirements.txt

@@ -12,6 +12,6 @@ timm==0.9.2
 zoopt==0.4.1
 
 # timeseries lib
-statsforecast==1.7.0
+statsforecast==2.0.3
 prophet==1.1.5
 holidays==0.39