Bump django from 2.1.7 to 2.2.13

Created by: dependabot[bot]

Bumps django from 2.1.7 to 2.2.13.

Commits

• 8093aaa [2.2.x] Bumped version for 2.2.13 release.
• 07e59ca [2.2.x] Fixed CVE-2020-13254 -- Enforced cache key validation in memcached ba...
• 6d61860 [2.0.x] Fixed CVE-2020-13596 -- Fixed potential XSS in admin ForeignKeyRawIdW...
• 7e1084e [2.2.x] Added release date for 2.2.13.
• 2b69680 [2.2.x] Refs #31485 -- Backported jQuery upgrade to 3.5.1.
• 8301bc9 [2.2.x] Fixed E128, E741 flake8 warnings.
• c7bab8d [2.2.x] Fixed term warning on Sphinx 3.0.1+.
• 79baf33 [2.2.x] Fixed highlightlang deprecation warning on Sphinx 1.8+.
• 151a83e [2.2.x] Fixed CodeBlock deprecation warning on Sphinx 2.1+.
• b0d810a [2.2.x] Fixed Sphinx warnings on duplicate object descriptions.
• Additional commits viewable in compare view

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