[ci skip] chore: update gradle + plugins

- updated gradle (7.4.2 -> 8.6)
- updated shadow plugin (7.1.2 -> 8.1.1)

Author: CodeTheDev

build.gradle.kts

@@ -2,14 +2,12 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 
 plugins {
     id("java")
-    id("com.github.johnrengelman.shadow") version "7.1.2" apply false
+    id("com.github.johnrengelman.shadow") version "8.1.1"
 }
 
 group = "dev.codeerror"
 version = "1.3"
 
-apply(plugin = "com.github.johnrengelman.shadow")
-
 repositories {
     mavenCentral()
     maven(url = "https://jitpack.io")

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists