Bump sphinx from 2.2.0 to 3.0.4

[dependabot-preview]

Bumps sphinx from 2.2.0 to 3.0.4.

Changelog

Sourced from sphinx's changelog.

Release 3.0.4 (released May 27, 2020)

Bugs fixed

• #7567: autodoc: parametrized types are shown twice for generic types
• #7637: autodoc: system defined TypeVars are shown in Python 3.9
• #7696: html: Updated jQuery version from 3.4.1 to 3.5.1 for security reasons
• #7611: md5 fails when OpenSSL FIPS is enabled
• #7626: release package does not contain CODE_OF_CONDUCT

Release 3.0.3 (released Apr 26, 2020)

Features added

• C, parse array declarators with static, qualifiers, and VLA specification.

Bugs fixed

• #7516: autodoc: crashes if target object raises an error on accessing its attributes

Release 3.0.2 (released Apr 19, 2020)

Features added

• C, parse attributes and add :confval:c_id_attributes and :confval:c_paren_attributes to support user-defined attributes.

Bugs fixed

• #7461: py domain: fails with IndexError for empty tuple in type annotation
• #7510: py domain: keyword-only arguments are documented as having a default of None
• #7418: std domain: :rst:role:term role could not match case-insensitively
• #7461: autodoc: empty tuple in type annotation is not shown correctly
• #7479: autodoc: Sphinx builds has been slower since 3.0.0 on mocking
• C++, fix spacing issue in east-const declarations.
• #7414: LaTeX: Xindy language options were incorrect
• sphinx crashes with ImportError on python3.5.1

Release 3.0.1 (released Apr 11, 2020)

... (truncated)

Commits

• b797f7f Bump to 3.0.4 final
• c1ef87a Fix #7696: html: Updated jQuery version from 3.4.1 to 3.5.1
• f777ad3 Merge pull request #7638 from tk0miya/7626_missing_CODE_OF_CONDUCT
• f732561 Merge pull request #7640 from tk0miya/suppress_system_defined_TypeVars
• 1fbfb72 Suppress arguments if all system defined TypeVars on py39
• cf5660c Fix #7626: release package does not contain CODE_OF_CONDUCT
• d670214 Merge pull request #7614 from lhupfeldt/3.0.x
• 7d41edd Introduce fips safe sha1, see issue #7611
• 8bbc7b8 Rename fips_safe_md5 to md5
• 193d141 Fix mypy and flake8 checks
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #254.