Bump esbonio from 0.16.1 to 0.16.4 (#1096)

Bumps [esbonio](https://github.com/swyddfa/esbonio) from 0.16.1 to 0.16.4.
- [Release notes](https://github.com/swyddfa/esbonio/releases)
- [Commits](https://github.com/swyddfa/esbonio/compare/esbonio-language-server-v0.16.1...esbonio-language-server-v0.16.4)

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

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

docs/requirements.txt

@@ -10,7 +10,7 @@ charset-normalizer==3.1.0
 click==8.1.3
 colorama==0.4.6
 docutils==0.18.1
-esbonio==0.16.1
+esbonio==0.16.4
 furo==2024.1.29
 idna==3.4
 imagesize==1.4.1