Bump sphinx-book-theme from 1.1.2 to 1.1.3

Bumps [sphinx-book-theme](https://github.com/executablebooks/sphinx-book-theme) from 1.1.2 to 1.1.3.
- [Release notes](https://github.com/executablebooks/sphinx-book-theme/releases)
- [Changelog](https://github.com/executablebooks/sphinx-book-theme/blob/master/CHANGELOG.md)
- [Commits](executablebooks/sphinx-book-theme@v1.1.2...v1.1.3)

---
updated-dependencies:
- dependency-name: sphinx-book-theme
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -40,7 +40,7 @@ docs = [
   "sphinx_rtd_theme",
   "sphinxcontrib-video",
   "sphinx-autodoc-typehints",
-  "sphinx-book-theme==1.1.2",
+  "sphinx-book-theme==1.1.3",
   "sphinx-click",
   "sphinx-copybutton",
   "sphinx-markdown-tables==0.0.17",