Bump pygls from 1.3.0 to 1.3.1 (#1335)

Bumps [pygls](https://github.com/openlawlibrary/pygls) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/openlawlibrary/pygls/releases)
- [Changelog](https://github.com/openlawlibrary/pygls/blob/main/CHANGELOG.md)
- [Commits](https://github.com/openlawlibrary/pygls/compare/v1.3.0...v1.3.1)

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

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

docs/requirements.txt

@@ -24,7 +24,7 @@ mdit-py-plugins==0.4.0
 mdurl==0.1.2
 myst-parser==2.0.0
 packaging==24.0
-pygls==1.3.0
+pygls==1.3.1
 Pygments==2.17.2
 pyspellchecker==0.7.2
 PyYAML==6.0.1