The latest charm revisions no longer available for Focal on Quincy/stable channel

Adding steps taken to reproduce this:

$ juju deploy --to lxd:19 --config source=cloud:focal-yoga --channel stable --series focal ceph-radosgw rgw-az1
Located charm "ceph-radosgw" in charm-hub, revision 526
Deploying "rgw-az1" from charm-hub charm "ceph-radosgw", revision 526 in channel quincy/stable on focal

Model Controller Cloud/Region Version SLA Timestamp
vstack home-lab-default Home-Lab/default 2.9.37 unsupported 12:36:14-07:00

App Version Status Scale Charm Channel Rev Exposed Message
rgw-az1 17.2.6 active 1 ceph-radosgw quincy/stable 526 no Unit is ready

Unit Workload Agent Machine Public address Ports Message
rgw-az1/0* active idle 19/lxd/6 10.1.15.148 443/tcp Unit is ready

Machine State Address Inst id Series AZ Message
19 started 10.1.8.20 os-vm-10 focal default Deployed
19/lxd/6 started 10.1.15.148 juju-b096f0-19-lxd-6 focal default Container started

$ juju refresh rgw-az1
charm "ceph-radosgw": already up-to-date

$ juju refresh rgw-az1 --switch ch:ceph-radosgw --channel pacific/stable
Added charm-hub charm "ceph-radosgw", revision 553 in channel pacific/stable, to the model
Leaving endpoints in "alpha": admin, certificates, cluster, gateway, ha, identity-service, internal, master, mon, nrpe-external-master, object-store, public, radosgw-user, slave

$ juju deploy --to lxd:88 ceph-radosgw rgw-az2 --series jammy --channel quincy/stable
Located charm "ceph-radosgw" in charm-hub, revision 548
Deploying "rgw-az2" from charm-hub charm "ceph-radosgw", revision 548 in channel quincy/stable on jammy

$ juju status rgw-az1 rgw-az2
Model Controller Cloud/Region Version SLA Timestamp
vstack home-lab-default Home-Lab/default 2.9.37 unsupported 13:02:02-07:00

App Version Status Scale Charm Channel Rev Exposed Message
rgw-az1 17.2.6 active 1 ceph-radosgw quincy/stable 526 no Unit is ready
rgw-az2 17.2.6 active 1 ceph-radosgw quincy/stable 548 no Unit is ready

Unit Workload Agent Machine Public address Ports Message
rgw-az1/0* active idle 19/lxd/6 10.1.15.148 443/tcp Unit is ready
rgw-az2/1* active idle 89/lxd/0 10.1.15.202 443/tcp Unit is ready

Machine State Address Inst id Series AZ Message
19 started 10.1.8.20 os-vm-10 focal default Deployed
19/lxd/6 started 10.1.15.148 juju-b096f0-19-lxd-6 focal default Container started
89 started 10.1.8.73 ceph-vm-7 jammy default Deployed
89/lxd/0 started 10.1.15.202 juju-b096f0-89-lxd-0 jammy default Container started

https://opendev.org/openstack/charm-ceph-radosgw/src/branch/stable/quincy.2/charmcraft.yaml#L23

there was an attempt to revert this at https://review.opendev.org/c/openstack/charm-ceph-radosgw/+/862996/1/metadata.yaml although charmcraft.yaml doesn't have 20.04

Fix proposed to branch: stable/quincy.2
Review: https://review.opendev.org/c/openstack/charm-ceph-radosgw/+/893461

Reviewed: https://review.opendev.org/c/openstack/charm-ceph-radosgw/+/893461
Committed: https://opendev.org/openstack/charm-ceph-radosgw/commit/c9d220af1fa50b51fbbcd4961337f3d2503fefbc
Submitter: "Zuul (22348)"
Branch: stable/quincy.2

commit c9d220af1fa50b51fbbcd4961337f3d2503fefbc
Author: Felipe Reyes <email address hidden>
Date: Thu Aug 31 21:27:00 2023 -0400

    Add build-on/run-on to support Ubuntu 20.04

    To fix the build jsonschema is pinned to the latest version that doesn't
    depend (indirectly) on Rust.

    Closes-Bug: #2033673
    Change-Id: Id6777eb23b3b4cc6b0fb239a61d64502a5d74451

charm's revision 558 available in quincy/stable has the correct metadata to declare Focal support.

Worked like a charm! Thank you for taking care of this.