build(deps): update torch-scatter requirement from <=2.1.0 to <=2.1.1 in /requirements

[dependabot[bot]]

Updates the requirements on torch-scatter to permit the latest version.

Release notes

Sourced from torch-scatter's releases.

2.1.1

• Added support for PyTorch 2.0

Commits

• c38e20a PyTorch 2.0 wheels (#358)
• fa4f442 Fix compilation errors occurring when building with PyTorch-nightly (#347)
• fe83843 add SCATTER_API definition for scatter_mul in scatter.cpp & scatter.h (#344)
• 111ffc4 Use static constexpr for VS compilation (#342)
• 8e6635b fix test (#340)
• 003abd5 Improve scatter performance + upgrade to torch-scatter==2.1.0 (#338)
• c128508 Build wheels for Windows and Python 3.7 (#336)
• f95330e PyTorch 1.13 support (#334)
• 5737336 Bring back composite documentation (#331)
• c615acc fix sphinx toctree depth
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

Merging #1610 (414956f) into master (fa43e9b) will decrease coverage by 1%. The diff coverage is n/a.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1610 +/- ## ======================================= - Coverage 86% 85% -1% ======================================= Files 291 291 Lines 12876 12876 ======================================= - Hits 11015 10905 -110 - Misses 1861 1971 +110 ```