Update rubygem-rack-2.2 to version 2.2.6.4 / rev 4 via SR 1072043
https://build.opensuse.org/request/show/1072043
by user dancermak + dimstar_suse
- updated to version 2.2.6.4
[CVE-2023-27539] Avoid ReDoS in header parsing (forwarded request 1072032 from danidoni)