Fix ktor testLatestDeps (#5014)

instrumentation/ktor-1.0/library/build.gradle.kts

@@ -18,6 +18,10 @@ dependencies {
   // Note, we do not have a :testing library yet because there doesn't seem to be a way to have the Kotlin classes
   // available for use from Spock. We will first need to migrate HttpServerTest to be usable outside of Spock.
   testLibrary("io.ktor:ktor-server-netty:1.0.0")
+
+  latestDepTestLibrary("io.ktor:ktor-server-core:1.+")
+
+  latestDepTestLibrary("io.ktor:ktor-server-netty:1.+")
 }
 
 tasks {