owners: change the status of 8.8rt to reflect current maintenance

Upstream Status: RHEL-Only
JIRA: INTERNAL

Reference: https://gitlab.com/cki-project/kernel-workflow/-/issues/526

Signed-off-by: Derek Barbosa <debarbos@redhat.com>

Author: Derek Barbosa

info/RHMAINTAINERS

@@ -170,7 +170,7 @@ F:	Makefile.rhelver
 
 RHEL 8.8 Real Time Kernel Maintainer
 M:	Tyonnchie Berry <tyberry@redhat.com>
-S:	Supported
+S:	Unsupported
 F:	Makefile.rhelver
 
 RHEL 8.7 Kernel Maintainer

info/owners.yaml

@@ -342,7 +342,7 @@ subsystems:
  - subsystem: RHEL 8.8 Real Time Kernel Maintainer
    labels:
      name: redhat
-   status: Supported
+   status: Unsupported
    devel-sst:
      - rhel-sst-kernel-rts
    requiredApproval: true