Update mkdocs-material to 5.1.3

[pyup-bot]

This PR updates mkdocs-material from 5.1.1 to 5.1.3.

Changelog

5.1.3

* Fixed overflowing content area after switch to flexbox

5.1.2

* Added status information to search observable
* Added status information to search modal
* Removed announcement bar from print media
* Removed media query packing logic due to race conditions
* Fixed 1520: Gracefully disable search on file:// if Worker fails
* Fixed re-submission of query after search is initialized
* Fixed jitter of sidebars on all browsers by switching to sticky

Links

• PyPI: https://pypi.org/project/mkdocs-material
• Changelog: https://pyup.io/changelogs/mkdocs-material/
• Repo: https://squidfunk.github.io/mkdocs-material/

[coveralls]

Pull Request Test Coverage Report for Build 756

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.248%

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Totals
Change from base Build 749:	0.0%
Covered Lines:	1584
Relevant Lines:	1596

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 756

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.248%

---

Totals
Change from base Build 749:	0.0%
Covered Lines:	1584
Relevant Lines:	1596

---

💛 - Coveralls

[pyup-bot]

Closing this in favor of #119