devel/mill: Update to 0.7.1

• GenIdea: Use new content element for each source path
• Respect skipIdea in more places
• Fix generator for ivy.xml when using extra publish artifacts
• Fix Sonatype requests retrying too fast
• Made scoverage more robust and better configurable
• Added .mill-version file
• Scala 2.13.2
• Disable client daemon mode in WSL
• Avoid duplicate target with __ and fix resolve __
• try to avoid weird 'Cleaner terminated abnormally' error
• Upgrade coursier
• fix the lineCount task to use correct os methods
• Align JNA API/platform version
• fix broken cmds and outputs
• add doc for visualizePlan of two modules
• make -w/--watch work with T.source targets
• Swap out custom scheduler for Futures
• Improve logging for parallel builds
• add missing flush() forward to CallbackStream
• Use double-checked locking around scala compiler bridge compilation
• Stripe locking around compiler bridge initialization
• fix coloring and make them support the command-line flag
• Rename .test with .testUncached to avoid duplicate resolution
• Ability to pass GPG arguments to publish

PR: 246523
Submitted by: freebsd-ports@jan0sch.de (maintainer)