build: minor gradle refinements

Signed-off-by: Andreas Reichel <andreas@manticore-projects.com>

Author: manticore-projects

build.gradle

@@ -3,7 +3,7 @@ import com.nwalsh.gradle.saxon.SaxonXsltTask
 
 buildscript {
     dependencies {
-        classpath group: 'net.sf.saxon', name: 'Saxon-HE', version: '12.5'
+        classpath group: 'net.sf.saxon', name: 'Saxon-HE', version: 'latest.release'
     }
 }
 
@@ -463,15 +463,15 @@ tasks.register('updateKeywords', JavaExec) {
     dependsOn(compileJava)
 }
 
-task xslt(type: SaxonXsltTask) {
+tasks.register('xslt', SaxonXsltTask) {
     def outFile = version.endsWith("-SNAPSHOT")
-            ?   file("src/site/sphinx/syntax_snapshot.rst")
-            :   file("src/site/sphinx/syntax_stable.rst")
+            ? file("src/site/sphinx/syntax_snapshot.rst")
+            : file("src/site/sphinx/syntax_stable.rst")
 
     dependsOn(renderRR)
     stylesheet file('src/main/resources/rr/xhtml2rst.xsl')
 
-    parameters (
+    parameters(
             "withFloatingToc": System.getenv().getOrDefault("FLOATING_TOC", "true"),
             "isSnapshot": Boolean.toString(version.endsWith("-SNAPSHOT"))
     )