SOLR-15871: Update Log4J to 2.17.1
SOLR-15961: Fix bug in PKIAuthenticationPlugin that can cause a request to fail with 401 Unauthorized instead of re-fetching expired remote keys from other nodes.
SOLR-14569: Configuring a shardHandlerFactory on the /select requestHandler results in HTTP 401 when searching on alias in secured Solr.
SOLR-16022: Enforce special character requirements on passwords with length less than 15
SOLR-16075: ShowFileHandler path parameter is now validated to be relative to instance conf dir in standalone mode

SOLR-15849: Fix the connection reset problem caused by the incorrect use of 4LW with \n when monitoring zooKeeper status
SOLR-16199: Improve query syntax construction for SQL LIKE clause with phrases and wildcards
SOLR-16143: SolrConfig can miss updates from ZooKeeper when deleting and recreating file items