ref-manual: update tested and supported distros

According to currently active workers
https://autobuilder.yoctoproject.org/typhoon/#/workers
and to the "workers_prev_releases" definition
in https://git.yoctoproject.org/yocto-autobuilder2/tree/config.py

Also correct the text saying that SANITY_TESTED_DISTROS
lists currently tested distros.

Also replace AlmaLinux 8.8 and 9.2 by just AlmaLinux 8 and 9,
as we update our workers anyway.

(From yocto-docs rev: f169122a4594d7733ebc478d34aaf269801fc068)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

documentation/ref-manual/system-requirements.rst

@@ -62,8 +62,6 @@ supported on the following distributions:
 
 -  Ubuntu 22.04 (LTS)
 
--  Fedora 37
-
 -  Fedora 38
 
 -  CentOS Stream 8
@@ -74,19 +72,18 @@ supported on the following distributions:
 
 -  OpenSUSE Leap 15.4
 
--  AlmaLinux 8.8
+-  AlmaLinux 8
 
--  AlmaLinux 9.2
+-  AlmaLinux 9
 
-The following distribution versions are still tested (being listed
-in :term:`SANITY_TESTED_DISTROS`), even though the organizations
-publishing them no longer make updates publicly available:
+-  Rocky 9
+
+The following distribution versions are still tested, even though the
+organizations publishing them no longer make updates publicly available:
 
 -  Ubuntu 18.04 (LTS)
 
--  Ubuntu 22.10
-
--  OpenSUSE Leap 15.3
+-  Ubuntu 23.04
 
 Note that the Yocto Project doesn't have access to private updates
 that some of these versions may have. Therefore, our testing has
@@ -95,7 +92,11 @@ limited value if you have access to such updates.
 Finally, here are the distribution versions which were previously
 tested on former revisions of "&DISTRO_NAME;", but no longer are:
 
-*This list is currently empty*
+-  Ubuntu 22.10
+
+-  Fedora 37
+
+-  OpenSUSE Leap 15.3
 
 .. note::