Update dependency net.sf.saxon:Saxon-HE to v12.9

Author: renovate[bot]

pom.xml

@@ -98,7 +98,7 @@
     <dependency>
       <groupId>net.sf.saxon</groupId>
       <artifactId>Saxon-HE</artifactId>
-      <version>12.8</version>
+      <version>12.9</version>
       <scope>runtime</scope>
     </dependency>
     <dependency>