5.3.1

Bug fixes:

• Downgrade slf4j to fix warning on console about missing slf4j provider
• Allow download and verify extensions to be created on demand in custom tasks, so these tasks can be made compatible with Gradle's configuration cache (see #284). Thanks to @liblit for testing!

Maintenance:

• Update dependencies
• Improve documentation
• Add integration tests for Gradle 6.9.3 and 7.6