chore(deps): update dependency django to v4.2.20

This MR contains the following updates:

Package	Update	Change
Django (changelog)	patch	==4.2.6 -> ==4.2.20

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Release Notes

django/django (Django)

v4.2.20

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v4.2.19

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v4.2.18

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v4.2.17

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v4.2.16

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v4.2.15

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v4.2.14

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v4.2.13

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v4.2.12

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v4.2.11

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v4.2.10

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v4.2.9

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v4.2.8

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v4.2.7

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Configuration

Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

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This MR has been generated by Renovate Bot.

requirements.txt

 coverage==7.2.5  # 5.3.1
-Django==4.2.6 # cve: 3.1.6
+Django==4.2.20 # cve: 3.1.6
 django-markdownify==0.8.2
 django-ratelimit==3.0.1
 django-test-plus==1.4.0