SessionTest::testURLResolution(): fix test

The Render server redirects to `https`, so as things were, we'd have a scheme mismatch in the tests.

By making it explicit that we are requesting an `https` URL and expecting the response from that, the test should pass again (locally).

tests/Session/SessionTest.php

@@ -7,13 +7,13 @@
 
 final class SessionTest extends TestCase {
  public function testURLResolution() {
- $session = new Session($this->httpbin('/'));
+ $session = new Session($this->httpbin('/', true));
 
  // Set the cookies up
  $response = $session->get('/get');
  $this->assertTrue($response->success, 'Session property "success" is not equal to true');
  $this->assertSame(
- $this->httpbin('/get'),
+ $this->httpbin('/get', true),
  $response->url,
  'Session property "url" is not equal to the expected get URL'
  );
@@ -22,7 +22,7 @@ public function testURLResolution() {
  $this->assertNotNull($data, 'Decoded response body is null');
  $this->assertArrayHasKey('url', $data, 'Response data array does not have key "url"');
  $this->assertSame(
- $this->httpbin('/get'),
+ $this->httpbin('/get', true),
  $data['url'],
  'The value of the "url" key in the response data array is not equal to the expected get URL'
  );