saxon 11.4

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1903100 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.gradle b/build.gradle
index 0318f1c..76931c8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -153,7 +153,7 @@
         batikVersion = '1.14'
         graphics2dVersion = '0.38'
         pdfboxVersion = '2.0.26'
-        saxonVersion = '11.3'
+        saxonVersion = '11.4'
         apiGuardianVersion = '1.1.2'
 
         jdkVersion = (project.properties['jdkVersion'] ?: '8') as int