Cleaned up settings cache after test

All tests after this one were in a non-sending email state, which luckily
doesn't affect these tests, but it will affect future ones! This just cleans up
the settings so that they're back to a standard default.

ghost/core/test/e2e-api/admin/members.test.js

@@ -904,6 +904,7 @@ describe('Members API', function () {
         await agent.delete(`/members/${memberFailVerification.id}`);
 
         await configUtils.restore();
+        settingsCache.set('email_verification_required', false);
     });
 
     it('Can add and send a signup confirmation email', async function () {