Added de-DE to langs available for selection.

Languages in dropdown are now ordered using the locale that is selected.
Added AI Policy to CONTRIBUTING.md, PR template.

Additional debug logging for proxyauth access_granted

Merge pull request #424 from voidauth/fix/proxyauth-nginx-doc

Fix Issue in NGINX ProxyAuth Documentation

Merge pull request #417 from voidauth/l10n_main

Crowdin Translations Update

Small wording change and dependabot settings change.

Merge pull request #392 from voidauth/fix/client-id-editable-update

Merge pull request #391 from voidauth/fix/max-session-age-proxyauth

Update dependencies

Fix Incorrect Conversion of Possibly Null Value to Date

Add more column names that require conversion before migration