v0.8.0 - Move to Scala 3

What's Changed

Migrate to Scala 3 by @kubukoz in #349

This is a big one - the changes were mostly mechanical-ish, but this will require any plugin authors to republish their plugins using Scala 3.

Other changes

• TransitiveCompiler has been upstreamed by @kubukoz in #452
• Flexible collections (don't rely so much on CollectionTag) by @kubukoz in #453
• Update alloy-core to 0.3.11 by @scala-steward in #454
• Update cats-mtl to 1.5.0 by @scala-steward in #455
• Update alloy-core to 0.3.12 by @scala-steward in #456
• Update alloy-core to 0.3.13 by @scala-steward in #457
• Update alloy-core to 0.3.14 by @scala-steward in #458
• Update jsoniter-scala-macros to 2.30.8 by @scala-steward in #459
• Update fs2-io to 3.11.0 by @scala-steward in #460
• Update jsoniter-scala-macros to 2.30.9 by @scala-steward in #461
• Update circe-core, circe-generic, ... to 0.14.10 by @scala-steward in #462
• Update smithy-aws-traits to 1.51.0 by @scala-steward in #463
• Update coursier to 2.1.11 by @scala-steward in #464
• Update smithy4s-aws-http4s, ... to 0.18.24 by @scala-steward in #466
• Update coursier to 2.1.12 by @scala-steward in #467
• Update http4s-ember-client, ... to 0.23.28 by @scala-steward in #465
• Update coursier to 2.1.13 by @scala-steward in #469
• Update jsoniter-scala-macros to 2.30.10 by @scala-steward in #468
• Update jsoniter-scala-macros to 2.30.11 by @scala-steward in #470
• Update jsoniter-scala-macros to 2.30.12 by @scala-steward in #471
• Update scala-library to 2.13.15 by @scala-steward in #472
• Update jsoniter-scala-macros to 2.30.13 by @scala-steward in #473
• Update jsoniter-scala-macros to 2.30.14 by @scala-steward in #474
• Update jsoniter-scala-macros to 2.30.15 by @scala-steward in #475
• Update coursier to 2.1.14 by @scala-steward in #476
• Update jsoniter-scala-macros to 2.31.0 by @scala-steward in #477
• Update smithy-aws-traits to 1.52.0 by @scala-steward in #478
• Update jsoniter-scala-macros to 2.31.1 by @scala-steward in #479
• Update http4s-ember-client, ... to 0.23.29 by @scala-steward in #480
• Update smithy-aws-traits to 1.52.1 by @scala-steward in #481
• Update cats-effect to 3.5.5 by @scala-steward in #482

Full Changelog: v0.7.3...v0.8.0