updates

build.gradle

@@ -11,9 +11,6 @@ plugins {
   id 'application' 
 }
 
-sourceCompatibility = JavaVersion.VERSION_21
-targetCompatibility = JavaVersion.VERSION_21
-
 application {
     mainClass = 'lodge.TestReservations'
 }
@@ -23,15 +20,17 @@ sourceSets {
     java { 
       srcDirs = ['src/java']
     }
+    runtimeClasspath = files("$projectDir/libs/*.jars")
   }
 }
 
 repositories {
+  mavenCentral()
   fileTree(dir:'libs', include:'*.jar')
 }
 
 dependencies {
-  implementation files('libs/gson-2.13.1.jar')
+  implementation 'com.google.code.gson:gson:2.13.2'
 }
 
 jar {