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

Author: renovate[bot]

pom.xml

@@ -99,7 +99,7 @@ SOFTWARE.
     <dependency>
       <groupId>net.sf.saxon</groupId>
       <artifactId>Saxon-HE</artifactId>
-      <version>9.9.1-8</version>
+      <version>12.6</version>
       <scope>runtime</scope>
     </dependency>
     <dependency>