Bump torch-geometric from 2.6.0 to 2.6.1 (#870)

Bumps [torch-geometric](https://github.com/pyg-team/pytorch_geometric) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/pyg-team/pytorch_geometric/releases)
- [Changelog](https://github.com/pyg-team/pytorch_geometric/blob/master/CHANGELOG.md)
- [Commits](pyg-team/pytorch_geometric@2.6.0...2.6.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/requirements-optional.txt

@@ -1,4 +1,4 @@
-torch_geometric==2.6.0
+torch_geometric==2.6.1
 -f https://data.pyg.org/whl/torch-2.4.0+cpu.html
 torch_scatter==2.1.2
 torch_sparse==0.6.18