Merge pull request #92 from bunq/move-to-new-sandbox-bunq/sdk_java#89

Changed sandbox url and pinned key. (#89)

Author: OGKevin

src/main/java/com/bunq/sdk/context/ApiEnvironmentType.java

@@ -6,7 +6,7 @@
 public enum ApiEnvironmentType {
 
   PRODUCTION("api.bunq.com", "v1"),
-  SANDBOX("sandbox.public.api.bunq.com", "v1");
+  SANDBOX("public-api.sandbox.bunq.com", "v1");
 
   /**
    * Base URI of each given environment.

src/main/java/com/bunq/sdk/http/ApiClient.java

@@ -99,7 +99,7 @@ public class ApiClient {
   /**
    * Pinned keys.
    */
-  private static final String PINNED_KEY_SANDBOX = "sha256/MU13KqZt0UuH2FWgIWlTZOwpXYyqa1gnBMIzKqHNMRg=";
+  private static final String PINNED_KEY_SANDBOX = "sha256/GhNvDokiMyXzhGft+xXWFGchUmmh8R5dQEnO4xu81NY=";
   private static final String PINNED_KEY_PRODUCTION = "sha256/nI/T/sDfioCBHB5mVppDPyLi2HXYanwk2arpZuHLOu0=";
 
   /**