Use savecodenow image now that's been built

Refs. swh/infra/sysadm-environment#4881

swh/Chart.yaml

 apiVersion: v2
-appVersion: 22
+appVersion: 23
 description: A Helm chart to deploy the softwareheritage stack
 name: swh
 type: application

values-swh-application-versions.yaml

@@ -14,14 +14,14 @@ swh_loader_git_image: container-registry.softwareheritage.org/swh/infra/swh-apps
 swh_loader_git_image_version: '20230502.1'
 swh_loader_highpriority_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_highpriority
 swh_loader_highpriority_image_version: '20230503.1'
-swh_loader_savecodenow_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_highpriority
-swh_loader_savecodenow_image_version: '20230503.1'
 swh_loader_mercurial_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_mercurial
 swh_loader_mercurial_image_version: '20230331.1'
 swh_loader_metadata_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_metadata
 swh_loader_metadata_image_version: '20230516.1'
 swh_loader_package_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_package
 swh_loader_package_image_version: '20230427.1'
+swh_loader_savecodenow_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_savecodenow
+swh_loader_savecodenow_image_version: '20230517.1'
 swh_loader_svn_image: container-registry.softwareheritage.org/swh/infra/swh-apps/loader_svn
 swh_loader_svn_image_version: '20230306.1'
 swh_storage_image: container-registry.softwareheritage.org/swh/infra/swh-apps/storage