Bump the torch group in /requirements with 2 updates (#1050)

* Bump the torch group in /requirements with 2 updates

Bumps the torch group in /requirements with 2 updates: [torch](https://github.com/pytorch/pytorch) and [torchvision](https://github.com/pytorch/vision).


Updates `torch` from 2.5.1 to 2.6.0
- [Release notes](https://github.com/pytorch/pytorch/releases)
- [Changelog](https://github.com/pytorch/pytorch/blob/main/RELEASE.md)
- [Commits](pytorch/pytorch@v2.5.1...v2.6.0)

Updates `torchvision` from 0.20.1 to 0.21.0
- [Release notes](https://github.com/pytorch/vision/releases)
- [Commits](pytorch/vision@v0.20.1...v0.21.0)

---
updated-dependencies:
- dependency-name: torch
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: torch
- dependency-name: torchvision
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: torch
...

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

* Fix dpn exportable flag

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pavel Iakubovskii <qubvel@gmail.com>

requirements/required.txt

@@ -5,6 +5,6 @@ pretrainedmodels==0.7.4
 safetensors==0.5.2
 six==1.17.0
 timm==1.0.14
-torch==2.5.1
-torchvision==0.20.1
+torch==2.6.0
+torchvision==0.21.0
 tqdm==4.67.1

segmentation_models_pytorch/encoders/dpn.py

@@ -34,7 +34,7 @@
 
 class DPNEncoder(DPN, EncoderMixin):
     _is_torch_scriptable = False
-    _is_torch_exportable = False
+    _is_torch_exportable = True  # since torch 2.6.0
 
     def __init__(
         self,