MCR-3134 update to SOLR 9.6.1

Author: yagee-de

pom.xml

@@ -47,7 +47,7 @@
     <pmd.version>7.0.0</pmd.version>
     <selenium.version>4.3.0</selenium.version>
     <site.suffix />
-    <solr-runner.solrVersionString>8.11.3</solr-runner.solrVersionString>
+    <solr-runner.solrVersionString>9.6.1</solr-runner.solrVersionString>
     <sortpom.sortDeps>scope,groupId,artifactId</sortpom.sortDeps>
     <sortpom.sortFile>https://gist.githubusercontent.com/yagee-de/dfd3698c1b49173dbf251f74eb6a9297/raw/406460c088ff3cb6354e4ae6b40535e6f841607d/mycore_sort.xml</sortpom.sortFile>
     <sortpom.sortProps>true</sortpom.sortProps>