v0.18.21 : second-less date-time timestamps, `@scalaImports`

Changes

• Support parsing timestamps without seconds by @dhpiggott in #1553
• Adds a trait to force scala imports in generated code by @lenguyenthanh in #1550

Other changes

• Update sbt-bloop to 1.5.18 by @scala-steward in #1540
• Update sbt-scalafix to 0.12.1 by @scala-steward in #1541
• Update jsoniter-scala-macros to 2.28.5 by @scala-steward in #1543
• Update smithytranslate-proto to 0.5.3 by @scala-steward in #1542
• Update protobuf-java, protobuf-java-util to 3.24.4 by @scala-steward in #1546
• Update sbt-protoc to 1.0.7 by @scala-steward in #1548
• Allow customize sbt opts by @lenguyenthanh in #1551
• Add backticks on AWS page by @kubukoz in #1556
• Implement scalaImports trait by @lenguyenthanh in #1550
• Update os-lib to 0.10.1 by @scala-steward in #1547
• Bump clsx from 2.0.0 to 2.1.1 in /modules/website by @dependabot in #1554
• Bump docusaurus-lunr-search from 3.3.2 to 3.4.0 in /modules/website by @dependabot in #1555

Full Changelog: v0.18.20...v0.18.21