Fix gradle deprecation warnings

build.gradle

@@ -8,12 +8,14 @@ plugins {
     id 'com.ryandens.javaagent-application' version "0.4.2"
 }
 
-def rawVersion = project.hasProperty('version') ? project.version : '0.1.0-SNAPSHOT'
+String rawVersion = project.hasProperty('version') ? project.version : '0.1.0-SNAPSHOT'
 def versionWithoutPrefix = rawVersion.replaceAll('^v', '')
-
 group = 'lt.pow.nukagit'
 version = versionWithoutPrefix
-mainClassName = 'lt.pow.nukagit.Main'
+
+application {
+    mainClass = 'lt.pow.nukagit.Main'
+}
 
 repositories {
     mavenCentral()

cli/build.gradle

@@ -7,7 +7,10 @@ plugins {
 
 group = 'lt.pow.nukagit'
 version = '0.1.0-SNAPSHOT'
-mainClassName = 'lt.pow.nukagit.cli.Main'
+
+application {
+    mainClass = 'lt.pow.nukagit.cli.Main'
+}
 
 repositories {
     mavenCentral()

settings.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'de.fayard.refreshVersions' version '0.51.0'
+    id 'de.fayard.refreshVersions' version '0.60.3'
 }
 
 rootProject.name = 'nukagit'

versions.properties

@@ -1,13 +1,13 @@
 #### Dependencies and Plugin versions with their available updates.
-#### Generated by `./gradlew refreshVersions` version 0.51.0
+#### Generated by `./gradlew refreshVersions` version 0.60.3
 ####
 #### Don't manually edit or split the comments that start with four hashtags (####),
 #### they will be overwritten by refreshVersions.
 ####
 #### suppress inspection "SpellCheckingInspection" for whole file
 #### suppress inspection "UnusedProperty" for whole file
 ####
-#### NOTE: Some versions are filtered by the rejectVersionsIf predicate. See the settings.gradle.kts file.
+#### NOTE: Some versions are filtered by the rejectVersionIf predicate. See the settings.gradle.kts file.
 
 version.com.github.gestalt-config..gestalt-core=0.24.2