Update HC4 to latest

That contains among many bugfixes contains
the fix for HTTPCLIENT-1448 too.

https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310360&version=12325945
https://issues.apache.org/jira/browse/HTTPCLIENT-1448

CI
https://bamboo.zion.sonatype.com/browse/NX-OSSF72