Bump torchmetrics from 1.5.2 to 1.6.0 in /requirements

Bumps [torchmetrics](https://github.com/Lightning-AI/torchmetrics) from 1.5.2 to 1.6.0.
- [Release notes](https://github.com/Lightning-AI/torchmetrics/releases)
- [Changelog](https://github.com/Lightning-AI/torchmetrics/blob/master/CHANGELOG.md)
- [Commits](Lightning-AI/torchmetrics@v1.5.2...v1.6.0)

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

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

requirements/required.txt

@@ -18,5 +18,5 @@ segmentation-models-pytorch==0.3.4
 shapely==2.0.6
 timm==0.9.7
 torch==2.5.1
-torchmetrics==1.5.2
+torchmetrics==1.6.0
 torchvision==0.20.1