Fix deprecation warnings from Spotless (#3630)

Author: izeye

build.gradle

@@ -21,7 +21,7 @@ buildscript {
         classpath 'me.champeau.gradle:japicmp-gradle-plugin:0.4.1'
         classpath 'de.undercouch:gradle-download-task:5.2.1'
         classpath 'io.spring.javaformat:spring-javaformat-gradle-plugin:0.0.35'
-        classpath 'com.diffplug.spotless:spotless-plugin-gradle:6.12.1'
+        classpath 'com.diffplug.spotless:spotless-plugin-gradle:6.15.0'
 
         constraints {
             classpath('org.ow2.asm:asm:7.3.1') {
@@ -193,7 +193,7 @@ subprojects {
 
         spotless {
             kotlin {
-                ktlint().editorConfigOverride([disabled_rules: "no-wildcard-imports"])
+                ktlint().editorConfigOverride(['ktlint_standard_no-wildcard-imports': 'disabled'])
             }
         }