Update dependency isort to v5

This MR contains the following updates:

Package	Type	Update	Change
isort	dev-dependencies	major	^4.3.21 -> ^5.0.0

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added 4 commits

• 4c214d8c...c1197b38 - 3 commits from branch master
• ad40f6d1 - Update dependency isort to v5

Compare with previous version

mentioned in commit e096d125

merged