v5.7.4

What's Changed

• Clean old resources by @javizqh in #3051
• Bump django from 4.2.20 to 4.2.21 in /docs by @dependabot in #3062
• New exercise card design by @javizqh in #3061
• 3065 - Update exercise teasers by @GhYB30 in #3071
• Bump setuptools from 57.5.0 to 78.1.1 in /docs by @dependabot in #3073
• Prepare custom universes by @javizqh in #3078
• Revert "Prepare custom universes" by @javizqh in #3079

Full Changelog: v5.7.3...v5.7.4