Fix login error 403 (#208)

* Fix login error 403 #205

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tgtg/__init__.py

@@ -95,9 +95,11 @@ def get_credentials(self):
     @property
     def _headers(self):
         headers = {
-            "user-agent": self.user_agent,
-            "accept-language": self.language,
+            "accept": "application/json",
             "Accept-Encoding": "gzip",
+            "accept-language": self.language,
+            "content-type": "application/json; charset=utf-8",
+            "user-agent": self.user_agent,
         }
         if self.cookie:
             headers["Cookie"] = self.cookie