Migrate off deprecated Gradle dependency syntax

Author: chadlwilson

build.gradle

@@ -66,17 +66,17 @@ ext {
 
 dependencies {
     compileOnly project.deps.gocdPluginApi
-    implementation group: 'com.google.code.gson', name: 'gson', version: '2.13.2'
+    implementation 'com.google.code.gson:gson:2.13.2'
 
     testImplementation platform('org.junit:junit-bom:6.0.0')
-    testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api'
-    testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-params'
-    testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine'
-    testRuntimeOnly group: 'org.junit.platform', name: 'junit-platform-launcher'
-
-    testImplementation group: 'org.mockito', name: 'mockito-core', version: '5.20.0'
-    testImplementation group: 'org.assertj', name: 'assertj-core', version: '3.27.6'
-    testImplementation group: 'cd.go.plugin', name: 'go-plugin-api', version: project.versions.gocdPluginApi
+    testImplementation 'org.junit.jupiter:junit-jupiter-api'
+    testImplementation 'org.junit.jupiter:junit-jupiter-params'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+    testImplementation 'org.mockito:mockito-core:5.20.0'
+    testImplementation 'org.assertj:assertj-core:3.27.6'
+    testImplementation "cd.go.plugin:go-plugin-api:${project.versions.gocdPluginApi}"
 }
 
 test {