Update dependency sphinx_rtd_theme to v1.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx_rtd_theme	==1.0.0 -> ==1.1.0

---

Release Notes

readthedocs/sphinx_rtd_theme

### [`v1.1.0`](https://togithub.com/readthedocs/sphinx_rtd_theme/releases/tag/1.1.0) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.0.0...1.1.0) Installation instructions: https://sphinx-rtd-theme.readthedocs.io/en/stable/installing.html Changelog: https://sphinx-rtd-theme.readthedocs.io/en/stable/changelog.html

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.