JsonWebTask: Replace deprecated FollowRedirectsAttribute

Fixes:

    src/network/jsonwebtask.cpp: In function ‘QNetworkRequest mixxx::network::{anonymous}::newRequest(const QUrl&)’:
    src/network/jsonwebtask.cpp:104:43: error: ‘QNetworkRequest::FollowRedirectsAttribute’ is deprecated: Use RedirectPolicyAttribute [-Werror=deprecated-declarations]
      104 |     request.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
          |                                           ^~~~~~~~~~~~~~~~~~~~~~~~
    In file included from /usr/include/qt/QtNetwork/qnetworkaccessmanager.h:44,
                     from /usr/include/qt/QtNetwork/QNetworkAccessManager:1,
                     from src/network/webtask.h:4,
                     from src/network/jsonwebtask.h:7,
                     from src/network/jsonwebtask.cpp:1:
    /usr/include/qt/QtNetwork/qnetworkrequest.h:97:9: note: declared here
       97 |         FollowRedirectsAttribute Q_DECL_ENUMERATOR_DEPRECATED_X("Use RedirectPolicyAttribute"),
          |         ^~~~~~~~~~~~~~~~~~~~~~~~

1 files changed, 2 insertions, 3 deletions

diff --git a/src/network/jsonwebtask.cpp b/src/network/jsonwebtask.cpp
index 7a843145a3..c0634c3151 100644
--- a/src/network/jsonwebtask.cpp
+++ b/src/network/jsonwebtask.cpp
@@ -100,9 +100,8 @@ QNetworkRequest newRequest(
         const QUrl& url) {
     QNetworkRequest request(url);
     request.setHeader(QNetworkRequest::ContentTypeHeader, JSON_CONTENT_TYPE);
-#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
-    request.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
-#endif
+    request.setAttribute(QNetworkRequest::RedirectPolicyAttribute,
+            QNetworkRequest::NoLessSafeRedirectPolicy);
     return request;
 }