include Deauthorised status in readme

uk.gov.hmrc.sbt-auto-build can be updated to 3.22.0 in project/plugins.sbt
STDOUT_IGNORE_NETTY appender (and usage) can be removed from conf/logback.xml - Netty server is no longer used (Since Play 2.6.x)
ACCESS_LOG_FILE appender (and usage) can be removed from conf/logback.xml - it's never populated
There is a bobby warning (builds will be prevented after 05 Jul 2024) - see the pr builder for details
There is a bobby error - see the pr builder for details

hmrc / agent-client-authorisation