Update dependency org.apache.solr:solr-solrj to v9

Author: renovate[bot]

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ org-reflections = "0.9.11"
 poi = "5.4.1"
 resteasy = "4.7.10.Final"
 slf4j = "1.7.36"
-solrj = "7.7.3"
+solrj = "9.8.1"
 typesafeconfig = "0.1.0"
 velocity = "2.4.1"
 zookeeper = "3.9.3"