Artifactory's JIRA SSO login fails for JIRA server 8.11

Problem description: Atlassian's Jira server recently made a change to its API support. JRASERVER-70314 describes the change. This means that a specific REST API command that Artifactory uses to log people in via the JIRA/Crowd login fails.

What is the expected behavior? Artifactory is able to support later versions of the Jira server for authentication.

Steps to reproduce: 
1] Install both an older Atlassian Jira server (LTS version 8.5 was tested) and the latest release (Version 8.11.1) 
2] Configure Artifactory to connect to the Jira server (See screenshots)
3] Find that while 8.5 works, the 8.11.1 version does not - This error is printed in the HTTP debug logs indicate that this is caused by the "/rest/usermanagement/1/config/cookie" endpoint

#8.5.7 connection

2020-08-22 00:00:00,627 [http-nio-8081-exec-9] [DEBUG] (o.a.h.wire :73) - http-outgoing-2588 >> "GET /rest/usermanagement/1/config/cookie HTTP/1.1[\r][\n]"

[...]

2020-08-22 00:00:00,637 [http-nio-8081-exec-9] [DEBUG] (o.a.h.wire :73) - http-outgoing-2588 << "HTTP/1.1 200 [\r][\n]"
[...]
2020-08-22 00:00:00,638 [http-nio-8081-exec-9] [DEBUG] (o.a.h.wire :73) - http-outgoing-2588 << "X-Embedded-Crowd-Version: JIRA/8.5.7[\r][\n]"

#8.11.1 connection

2020-08-22 00:07:39,639 [http-nio-8081-exec-6] [DEBUG] (o.a.h.wire :73) - http-outgoing-49 >> "GET /rest/usermanagement/1/config/cookie HTTP/1.1[\r][\n]"

[...]

2020-08-22 00:07:39,662 [http-nio-8081-exec-6] [DEBUG] (o.a.h.wire :73) - http-outgoing-49 << "HTTP/1.1 500 [\r][\n]"

[...]

2020-08-22 00:07:39,666 [http-nio-8081-exec-6] [DEBUG] (o.a.h.wire :73) - http-outgoing-49 << "X-Embedded-Crowd-Version: JIRA/8.11.1[\r][\n]"

Possible workaround: Use the LTS version of Atlassian Jira for now