Play WS, async HTTP client 2.2.0-M2

Milestone release, do not use in production!

Comes with Scala 3 support, see pull requests below.

Changes

• #704 scala-xml 2.1.0 also for Scala 2.12 by @mkurz
• #703 slf4j-api 2.0.1 (was 1.7.36) by @scala-steward
• #700 logback-core 1.4.1 (was 1.2.11) by @scala-steward
• #702 scala3-library 3.2.0 (was 3.1.3) by @scala-steward
• #701 akka-stream 2.6.20 (was 2.6.19) by @scala-steward
• #699 🔄 Synced file(s) with playframework/.github by @ihostage
• #698 Removed Lightbend CLA from PR template by @BillyAutrey
• #697 scalafmt-core 3.5.9 (was 3.5.8) by @scala-steward
• #696 sbt 1.7 by @mkurz
• #694 scalafmt-core 3.5.8 (was 3.5.2) by @scala-steward
• #695 specs2-core, specs2-junit, ... 4.16.1 (was 4.13.3) by @scala-steward
• #689 sbt-mima-plugin 1.1.0 (was 1.0.1) by @scala-steward
• #693 scala3-library 3.1.3 (was 3.1.1) by @scala-steward
• #692 reactive-streams 1.0.4 (was 1.0.3) by @scala-steward
• #690 sbt-header 5.7.0 (was 5.6.5) by @scala-steward
• #691 assertj-core 3.23.1 (was 3.22.0) by @scala-steward
• #688 Use scala-xml 2.x for Scala 2.13+ by @mkurz
• #686 fix warnings by @xuwei-k
• #685 remove scala-java8-compat dependency by @xuwei-k
• #684 use jdk.CollectionConverters instead of deprecated JavaConverters by @xuwei-k
• #679 GitHub actions last round + badges by @mkurz
• #677 Use secrets inherit for publish workflow by @mkurz
• #676 Switch to cmd.yml by @mkurz
• #675 scalafmt-core 3.5.2 (was 3.5.1) by @scala-steward
• #674 Remove obsolete comment by @mkurz
• #673 Use new "Ready To Merge" approach for GHA by @mkurz
• #672 Switch to v1 GHA + nicer validateCode alias by @mkurz
• #669 scalafmt-core 3.5.1 (was 2.7.5) by @scala-steward
• #670 Switch to reusable workflows by @mkurz
• #667 awaitility 4.2.0 (was 4.1.1) by @scala-steward
• #666 sbt-assembly 1.2.0 (was 1.1.1) by @scala-steward
• #665 logback-core 1.2.11 (was 1.2.10) by @scala-steward
• #664 No need to exclude scala-parser-combinators anymore by @mkurz
• #663 Latest akka/ssl-config/play-json RC by @mkurz
• #604 Scala 3 by @xuwei-k
• #655 sbt-assembly 1.1.1 (was 1.1.0) by @scala-steward
• #659 slf4j-api 1.7.36 (was 1.7.35) by @scala-steward
• #656 sbt-header 5.6.5 (was 5.6.0) by @scala-steward
• #657 sbt 1.6.2 (was 1.6.1) by @scala-steward
• #660 specs2-core, specs2-junit, ... 4.13.3 (was 4.13.2) by @scala-steward
• #652 Add release drafter with configs from .github repo by @mkurz
• #650 Use official release drafter action by @mkurz
• #646 assertj-core 3.22.0 (was 3.21.0) by @scala-steward
• #648 slf4j-api 1.7.35 (was 1.7.32) by @scala-steward
• #649 specs2-core, specs2-junit, ... 4.13.2 (was 4.13.1) by @scala-steward
• #644 Drop Travis CI by @ihostage
• #643 Configure branches for PR workflow explicitly by @ihostage
• #639 Migrate check RRs for 2.1.x to GitHub Actions by @ihostage
• #637 Migrate to GitHub Actions by @ihostage

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🙇 Thanks to our contributors

Finally, thanks to the community for their help with detailed bug reports, discussions about new features and pull request reviews. This project is only possible due to the help we had from amazing contributors.
Special thanks to all code contributors who helped with this particular release (they are listed below)!