Update lombok version

Author: Adam-

build.gradle

@@ -15,8 +15,8 @@ def runeLiteVersion = '1.7.5'
 dependencies {
 	compileOnly group: 'net.runelite', name:'client', version: runeLiteVersion
 
-	compileOnly 'org.projectlombok:lombok:1.18.4'
-	annotationProcessor 'org.projectlombok:lombok:1.18.4'
+	compileOnly 'org.projectlombok:lombok:1.18.20'
+	annotationProcessor 'org.projectlombok:lombok:1.18.20'
 
 	testImplementation 'junit:junit:4.12'
 	testImplementation group: 'net.runelite', name:'client', version: runeLiteVersion