Turbine 0.7.0

Changes:

• JDK 17 is now the minimum supported JDK version to run Turbine
• Remove support for the String Templates preview feature (see JDK-8329949)
• Mark enums that cannot be extended as final (70a8b3c)
• Implement TypeElement.getRecordComponents (296a802)

Full changelog: v0.6.0...v0.7.0