GHA build logs have 56K lines of junk

[ARMmaster17]

For some reason, Selenium is writing every byte that goes through the sandboxed Chrome instance to the console, which besides being 100% unnecessary, makes it difficult to find log entries that matter. Additionally, most of the Spring startup log entries can be hidden.

• Remove Selenium log output from GHA logs. Only output should come directly from JUnit test suites.
• Get rid of some of the startup logging from Spring that we generally don't need.