3.3.4 release procedure

[WojciechMazur]

Publish 3.3.4 artifacts to Maven Central via CI

• On release-3.3.4 branch:
  • In Build.scala: Set baseVersion to 3.3.4
  • In changelogs add file with a changelog
• Tag the branch as 3.3.4
• Wait for CI to publish artefacts - https://github.com/scala/scala3/actions/runs/11030925031

Set bootstrapping for future versions version on lts-3.3

• In Build.scala: Set referenceVersion to 3.3.4
• In Build.scala: Set baseVersion to 3.3.5-RC1

Confirm that the tooling is working correctly

• Metals
• Scala Native
• Scastie
• Scala DAP
• Scala CLI

Prepare the documentation

• Publish API docs for 3.3.4
• Add 3.3.4 to the version list in API docs
• Update docs.scala-lang - Add Scala 3.3.4 to API links docs.scala-lang#3078

Announce the releases

• Make GitHub releases 3.3.4 public
• Release 3.3.4 to SDKMAN
• Unlock Scala Steward updates - Unlock Scala 3.3.4 LTS upgrades scala-steward-org/scala-steward#3420
• Publish an announcement on https://scala-lang.org - Add Scala 3.3.4 LTS announcement scala-lang#1698