fix(deps): update dependency org.asciidoctor:asciidoctor-gradle-jvm to v4.0.3

Author: renovate[bot]

build.gradle

@@ -10,7 +10,7 @@ buildscript {
     dependencies {
         classpath "org.codehaus.groovy.modules.http-builder:http-builder:0.7.2"
         classpath "org.grails:grails-gradle-plugin:$grailsGradlePluginVersion"
-        classpath 'org.asciidoctor:asciidoctor-gradle-jvm:4.0.2'
+        classpath 'org.asciidoctor:asciidoctor-gradle-jvm:4.0.3'
         classpath "com.github.erdi:webdriver-binaries-gradle-plugin:3.2"
         classpath "org.grails.plugins:views-gradle:3.2.3"
         classpath "io.github.gradle-nexus:publish-plugin:1.3.0"