Confluence: make ignore for decode response

As that for now that method used only for tracking of exporting status

Author: gonchik

atlassian/confluence.py

@@ -2787,7 +2787,7 @@ def get_pdf_download_url_for_confluence_cloud(self, url):
             headers = self.form_token_headers
             log.info("Initiate PDF export from Confluence Cloud")
             response = self.get(url, headers=headers, not_json_response=True)
-            response_string = response.decode(encoding="utf-8", errors="strict")
+            response_string = response.decode(encoding="utf-8", errors="ignore")
             task_id = response_string.split('name="ajs-taskId" content="')[1].split('">')[0]
             poll_url = "/services/api/v1/task/{0}/progress".format(task_id)
             while running_task: