Adjust further tests

Author: MatKuhr

cloudplatform/connectivity-oauth/src/test/java/com/sap/cloud/sdk/cloudplatform/connectivity/OAuth2ServiceBindingDestinationLoaderTest.java

@@ -351,7 +351,7 @@ void testProxiedDestination()
     {
         final URI proxyUrl = URI.create("http://proxyUrl:1234");
         final DefaultHttpDestination baseDestination =
-            DefaultHttpDestination.builder(baseUrl).proxyType(ProxyType.ON_PREMISE).build();
+            DefaultHttpDestination.builder(baseUrl).proxyType(ProxyType.ON_PREMISE).buildInternal();
 
         final DestinationHeaderProvider headerProviderMock = mock(DestinationHeaderProvider.class);
         when(headerProviderMock.getHeaders(any())).thenReturn(Collections.emptyList());
@@ -459,7 +459,7 @@ void testSkipProxyTokenRetrieval()
     {
         final URI proxyUrl = URI.create("http://proxyUrl:1234");
         final DefaultHttpDestination baseDestination =
-            DefaultHttpDestination.builder(baseUrl).proxyType(ProxyType.ON_PREMISE).build();
+            DefaultHttpDestination.builder(baseUrl).proxyType(ProxyType.ON_PREMISE).buildInternal();
         final ServiceBindingDestinationOptions options =
             ServiceBindingDestinationOptions
                 .forService(EMPTY_BINDING)