fix: Ensure PlotAreaBuilder#plotAreaType returns non-null value

build.gradle.kts

@@ -82,7 +82,7 @@ subprojects {
 
     dependencies {
         // Tests
-        testImplementation("org.junit.jupiter:junit-jupiter:5.9.3")
+        testImplementation("org.junit.jupiter:junit-jupiter:5.9.2")
     }
 
     plugins.withId("java") {

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ squirrelid = "0.3.2"
 # Gradle plugins
 shadow = "7.1.2"
 grgit = "4.1.1"
-spotless = "6.18.0"
+spotless = "6.17.0"
 nexus = "1.3.0"
 
 [libraries]