Update dependency org.spockframework:spock-bom to v2.3-groovy-3.0 (#69)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

buildSrc/src/main/kotlin/mpern.plugin.basics.gradle.kts

@@ -17,7 +17,7 @@ testing {
             if (this is JvmTestSuite) {
                 useJUnitJupiter()
                 dependencies {
-                    implementation(platform("org.spockframework:spock-bom:2.2-groovy-3.0"))
+                    implementation(platform("org.spockframework:spock-bom:2.3-groovy-3.0"))
                     implementation("org.spockframework:spock-core")
 
                     implementation(project())