Async Lifecycle (#781)* Drop support for 5.8* Adopt new APIs

Concurrency updates and database logging APIs (#775)* Bump dependency versions and clean up language flags* Make it easier to override the logger on a database when requesting it (since `.logging(to:)` doesn't usually work as intended)* Use the `willBootAsync` lifecycle callback to avoid calling `.wait()` when auto-migration is requested on the commandline.* Code style, improve the console output in the migration command* Make all the tests fully async and update them to use Application.make() etc.* Remove pointless Dependabot config

Fix up Fluent provider for Sendable-correct FluentKit (#774)* Bump minimum Swift to 5.8, add feature flags.* Structural/CI updates* Update to account for Sendable-correct FluentKit

Asyncification of Fluent provider (#772)* The usual structural updates* ExistentialAny and StrictConcurrency correctness pass* Make MigrateCommand async

Update min Swift version to 5.6 and make platform versions consistent (……#763)Update minimum Swift version to 5.6 and make platform versions consistent.

Update to match FluentKit's declared version minimums (#761)* Update to match FluentKit's declared version minimums

Add migrationLogLevel configuration (#756)* Add migrationLogLevel configuration* Use .any() instead of .next() for ELG

Update minimum Swift version to 5.5 (#751)Update minimum Swift version to 5.5, update very ancient CI

Add `asyncCredentialsAuthenticator` to `ModelCredentialsAuthenticatab……le` (#744)* Extend ModelCredentialsAuthenticatable with asyncCredentialsAuthenticator#743* compiler guards for test

Add support for async/await (#732)* Point to async/await dependencies* Add async pagination function* Add async APIs dfor sessions* Add async sessions* Add async versions of migrate and revert* Fix warning for Page Content conformance* Fix redundant conformance* Depend on FluentKit release* AsyncResponseEncodable is available everywhere now* Use release of Vapor