chore(deps): Update dependency sphinx_rtd_theme to v1.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinx_rtd_theme	==1.0.0 -> ==1.3.0

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[!WARNING] Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

readthedocs/sphinx_rtd_theme (sphinx_rtd_theme)

### [`v1.3.0`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.2...1.3.0) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.2...1.3.0) ### [`v1.2.2`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.1...1.2.2) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.1...1.2.2) ### [`v1.2.1`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.0...1.2.1) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.2.0...1.2.1) ### [`v1.2.0`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.1.1...1.2.0) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.1.1...1.2.0) ### [`v1.1.1`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.1.0...1.1.1) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.1.0...1.1.1) ### [`v1.1.0`](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.0.0...1.1.0) [Compare Source](https://togithub.com/readthedocs/sphinx_rtd_theme/compare/1.0.0...1.1.0)

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