build(deps-dev): bump torch-scatter from 2.1.1 to 2.1.2

Bumps [torch-scatter](https://github.com/rusty1s/pytorch_scatter) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/rusty1s/pytorch_scatter/releases)
- [Commits](rusty1s/pytorch_scatter@2.1.1...2.1.2)

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

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

pyproject.toml

@@ -55,7 +55,7 @@ dev = [
 ]
 pyg = [
   "torch_geometric==2.3.1",
-  "torch_scatter==2.1.1",
+  "torch_scatter==2.1.2",
   "torch_sparse==0.6.18",
   "pybind11"
 ]