Bump solr.version from 8.11.2 to 9.4.0

Bumps `solr.version` from 8.11.2 to 9.4.0.

Updates `org.apache.solr:solr-solrj` from 8.11.2 to 9.4.0

Updates `org.apache.solr:solr-core` from 8.11.2 to 9.4.0

---
updated-dependencies:
- dependency-name: org.apache.solr:solr-solrj
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.apache.solr:solr-core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -65,7 +65,7 @@
     <hibernate.version>5.6.15.Final</hibernate.version>
     <dockerJava.version>3.3.4</dockerJava.version>
     <cvssCalculator.version>1.4.2</cvssCalculator.version>
-    <solr.version>8.11.2</solr.version>
+    <solr.version>9.4.0</solr.version>
     <zookeeper.version>3.9.1</zookeeper.version>
 
     <!-- Versions of other software we need in our functional tests -->