Update Libs and Logging Improvements

[tesshucom]

There are no updates regarding vulnerabilities in Jpsonic itself.

🐥Maintenance

• Fix test cases #2639
• Revert Jetty to 12.0.6 #2640
• Suppress AsyncRequestNotUsableException #2642

📝 Summary

Logging Improvements

In v114.1.1, meaningless and redundant logs may be output, although there is no actual harm.

• Base Resource should not be an alias on startup
  • False positive for alias path validation present in Jetty
• AsyncRequestNotUsableException when playing music, etc.
  • Traditional warning log when a client closes a Stream that the server is writing to.
  • This is due to Spring specification change.

Improved so that these are not output.

Docker Image (Alpine)

Only CVE-2020-5408 is reported, but it is probably a false positive. Spring Security used by Jpsonic is the latest 6.2.4.