Bump isort from 5.9.3 to 5.10.0 in /requirements

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Bumps isort from 5.9.3 to 5.10.0.

Release notes

Sourced from isort's releases.

5.10.0

Implemented [#1796](https://github.com/pycqa/isort/issues/1796): Switch to tomli for pyproject.toml configuration loader.
Fixed [#1801](https://github.com/pycqa/isort/issues/1801): CLI bug (--exend-skip-glob, overrides instead of extending).
Fixed [#1802](https://github.com/pycqa/isort/issues/1802): respect PATH customization in nested calls to git.
Fixed [#1838](https://github.com/pycqa/isort/issues/1838): Append only with certain code snippets incorrectly adds imports.
Added official support for Python 3.10

Changelog

Sourced from isort's changelog.

5.10.0 November 3 2021

• Implemented #1796: Switch to tomli for pyproject.toml configuration loader.
• Fixed #1801: CLI bug (--exend-skip-glob, overrides instead of extending).
• Fixed #1802: respect PATH customization in nested calls to git.
• Fixed #1838: Append only with certain code snippets incorrectly adds imports.
• Added official support for Python 3.10

Potentially breaking changes:

• Fixed #1785: _ast module incorrectly excluded from stdlib definition.

Commits

• c154ecf Bump version to 5.10.0
• 7a13f31 Add changelog for 5.10
• 73245e9 Fixes #1838: don't append imports where no imports are present
• 223dc4c Remove unused import
• 488cdca Fix formatting
• 1f093f6 Merge pull request #1833 from chrisdecker1201/bug/do_not_skip_string
• 3c5da48 use regex to mach file_skip
• 4e3f64b fix linter
• ba81f1c Merge pull request #1834 from pzelnip/patch-1
• b1c5d7b Minor improvements to pre-commit.md
• Additional commits viewable in compare view

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