Bump django-extensions from 2.2.9 to 3.0.1 in /cvat/requirements

[dependabot-preview]

Bumps django-extensions from 2.2.9 to 3.0.1.

Changelog

Sourced from django-extensions's changelog.

3.0.1

Changes:

• Fix: setup.py, add python_requires and remove legacy trove classifiers

3.0.0

This is the first Django Extensions release which only targets Django 2.2 and above. It drops official support for Python 2.7.

Changes:

• Removal of Python 2 support
• Removal of deprecated keyczar encrypted fields EncryptedTextField and EncryptedCharField
• Removal of deprecated passwd command
• Removal of truncate_letters filter
• Change: TimeStampedModel; Removed default ordering on abstract model
• New: DjangoExtensionsConfig AppConfig
• New: shell_plus, JupyterLab support
• New: list_signals, List all signals by model and signal type
• Improvement: shell_plus, use -- to directly pass additional arguments to Jupyter
• Improvement: shell_plus, improvements to MySQL support
• Improvement: jobs, use logging to record errors
• Improvement: syncdata, added --remove-before flag
• Improvement: graph_models, add field and model to template context
• Fix: syncdata, fix non existent field in fixture data
• Fix: pipchecker, compatibility with pip 20.1

Commits

• 7096449 v3.0.1
• 4c5ca7a Merge pull request #1546 from michael-k/legacy
• 81ead80 Add python_requires and remove legacy trove classifiers
• deeda73 bumped version number
• c6fae5a v3.0.0
• a1b23dd reorder imports to fix E402
• 505f490 update changelog
• 71a6826 Merge branch 'master' of github.com:django-extensions/django-extensions
• ec46fe6 remove deprecated keyzcar encryption fields
• 49a6831 Merge pull request #1542 from yeojin-dev/delete-compatibility
• Additional commits viewable in compare view

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[coveralls]

Pull Request Test Coverage Report for Build 6243

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.004%) to 65.145%

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Files with Coverage Reduction	New Missed Lines	%
cvat/apps/engine/media_extractors.py	2	77.06%

Totals
Change from base Build 6235:	-0.004%
Covered Lines:	11047
Relevant Lines:	16548

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💛 - Coveralls