Bump sphinx-nefertiti from 0.9.1 to 0.9.9

Bumps [sphinx-nefertiti](https://github.com/danirus/sphinx-nefertiti) from 0.9.1 to 0.9.9.
- [Release notes](https://github.com/danirus/sphinx-nefertiti/releases)
- [Changelog](https://github.com/danirus/sphinx-nefertiti/blob/main/ChangeLog.md)
- [Commits](danirus/sphinx-nefertiti@0.9.1...0.9.9)

---
updated-dependencies:
- dependency-name: sphinx-nefertiti
  dependency-version: 0.9.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docs/requirements.in

@@ -1,4 +1,4 @@
 sphinx==8.2.3
-sphinx-nefertiti==0.9.1
+sphinx-nefertiti==0.9.9
 requests>=2.32.5  # Security fix
 urllib3>=2.6.0    # Security fix

pyproject.toml

@@ -66,7 +66,7 @@ dependencies = [
 [project.optional-dependencies]
 docs = [
     "sphinx==8.2.3",
-    "sphinx-nefertiti==0.9.1",
+    "sphinx-nefertiti==0.9.9",
 ]
 test = [
     "pytest>=7.0.0",