Update solr.version

Author: renovate-bot

pom.xml

@@ -66,7 +66,7 @@
     <dockerJava.version>3.5.0</dockerJava.version>
     <cvssCalculator.version>1.4.3</cvssCalculator.version>
     <solr.major.version>9</solr.major.version>
-    <solr.version>9.4.1</solr.version>
+    <solr.version>9.8.1</solr.version>
     <lucene.version>9.8.0</lucene.version>
     <jersey.version>2.46</jersey.version>
     <hk2.version>2.6.1</hk2.version>