Fix compiler warning about kotlin-reflect JAR

Author: ileasile

jupyter-lib/build.gradle.kts

@@ -6,4 +6,5 @@ project.version = rootProject.version
 
 dependencies {
     implementation(kotlin("stdlib"))
+    implementation(kotlin("reflect"))
 }

jupyter-lib/src/main/kotlin/jupyter/kotlin/context.kt

@@ -55,6 +55,7 @@ class KotlinVariableInfo(val value: Any?, val descriptor: KProperty<*>, val line
     val name: String
         get() = descriptor.name
 
+    @Suppress("MemberVisibilityCanBePrivate")
     val type: String
         get() = descriptor.returnType.toString()