Bump sphinx from 3.1.2 to 3.5.3

[dependabot-preview]

Bumps sphinx from 3.1.2 to 3.5.3.

Changelog

Sourced from sphinx's changelog.

Release 3.5.3 (released Mar 20, 2021)

Features added

• #8959: using UNIX path separator in image directive confuses Sphinx on Windows

Release 3.5.2 (released Mar 06, 2021)

Bugs fixed

• #8943: i18n: Crashed by broken translation messages in ES, EL and HR
• #8936: LaTeX: A custom LaTeX builder fails with unknown node error
• #8952: Exceptions raised in a Directive cause parallel builds to hang

Release 3.5.1 (released Feb 16, 2021)

Bugs fixed

• #8883: autodoc: AttributeError is raised on assigning annotations on read-only class
• #8884: html: minified js stemmers not included in the distributed package
• #8885: html: AttributeError is raised if CSS/JS files are installed via :confval:html_context
• #8880: viewcode: ExtensionError is raised on incremental build after unparsable python module found

Release 3.5.0 (released Feb 14, 2021)

Dependencies

• LaTeX: multicol (it is anyhow a required part of the official latex2e base distribution)

Incompatible changes

• Update Underscore.js to 1.12.0
• #6550: html: The config variable html_add_permalinks is replaced by :confval:html_permalinks and :confval:html_permalinks_icon

Deprecated

... (truncated)

Commits

• See full diff in compare view

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[codecov]

Codecov Report

Merging #235 (12d21a7) into master (e8e10e1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #235   +/-   ##
=======================================
  Coverage   94.95%   94.95%           
=======================================
  Files           8        8           
  Lines         357      357           
=======================================
  Hits          339      339           
  Misses         18       18           

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[dependabot-preview]

Superseded by #243.