Bump django-registration from 1.0 to 3.1.2

[dependabot[bot]]

Bumps django-registration from 1.0 to 3.1.2.

Commits

• 2db0bb7 Merge pull request from GHSA-58c7-px5v-82hh
• f314570 Bump version numbers for 3.1.2.
• 41460db Add CVE number to release notes.
• d68ec81 Add release notes for security advisory.
• 8206af0 Filter sensitive POST parameters in error reports
• 8e5a695 Merge pull request #224 from quroom/ko-translation
• e60d468 Update korean translation
• 5666558 Merge pull request #221 from TomasLoow/master
• 25a668e Fix up basepython for local runs.
• 8298d82 And do it properly.
• Additional commits viewable in compare view

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