Tidy tests using deprecated methods

Author: rbygrave

client/src/test/java/org/example/github/SimpleHttpClient.java

@@ -54,7 +54,7 @@ public InputStream getById2(String id, InputStream is) {
       context.request()
         .path("users").path(id).path("stream")
         .body(() -> is)
-        .GET().withResponseHandler(HttpResponse.BodyHandlers.ofInputStream());
+        .GET().withHandler(HttpResponse.BodyHandlers.ofInputStream());
 
     context.checkResponse(response);
     return response.body();

client/src/test/java/org/example/webserver/HelloController.java

@@ -71,7 +71,6 @@ void stream(Context context) {
    * @param date       The name of the hello
    * @param otherParam Optional other parameter
    * @return The Hello DTO given the id and name.
-   * @deprecated Please migrate away
    */
   @Get("/{id}/{date}")
   HelloDto hello(int id, LocalDate date, String otherParam) {