Bump tensorboard from 2.15.1 to 2.15.2

Bumps [tensorboard](https://github.com/tensorflow/tensorboard) from 2.15.1 to 2.15.2.
- [Release notes](https://github.com/tensorflow/tensorboard/releases)
- [Changelog](https://github.com/tensorflow/tensorboard/blob/2.15.2/RELEASE.md)
- [Commits](tensorflow/tensorboard@2.15.1...2.15.2)

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

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

requirements-freqai.txt

@@ -8,5 +8,5 @@ joblib==1.3.2
 catboost==1.2.2; 'arm' not in platform_machine and python_version < '3.12'
 lightgbm==4.3.0
 xgboost==2.0.3
-tensorboard==2.15.1
+tensorboard==2.15.2
 datasieve==0.1.7