Update dependency django-bleach to v2

This MR contains the following updates:

Package	Type	Update	Change
django-bleach	dependencies	major	^1.0.0 -> ^2.0.0

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Release Notes

marksweb/django-bleach

v2.0.0

Compare Source

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08-04-2022

• cap bleach version at <5 #​51
• drop support for python 3.6
• drop support for django 3.0 and 3.1
• added support for django 4

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