staging: Deploy latest nixguix related loaders and lister

Includes:

• swh/devel/swh-loader-core!459 (closed): Nar computations is now done in python (no longer need for the nix binary now)
• swh/devel/swh-loader-core!463 (closed): Content|Directory loaders now store the nar checksums as extids
• swh/devel/swh-lister!466 (merged): checksum_layout field renaming
• swh/devel/swh-loader-core!464 (merged): Impacted checksum_layout field renaming ^ from lister in the loaders

Plan:

• Depends on swh/devel/swh-lister!466 (merged) + swh/devel/swh-loader-core!464 (merged) being merged first
• Release swh.lister v5.2.0
• (ongoing) Release swh.loader.core v5.3.0 [1]
• swh-apps: Drop nix binary in the dockerfile [2]
• swh-apps: Build images ^
• swh-charts: Update values.yaml
• Deploy
• Trigger listing
• Checks
• swh/devel/swh-lister!467 (merged): Fix lister
• Redeploy lister
• Trigger listing again
• Listing
• (ongoing) Checks
  • (fail) swh-scheduler: listed origins with "checksum_layout" of type "nar" exist [3]
  • the lister works as before but it does not ingest any "nar" yet due to changes that need to happen
  • Discussion to clarify what needs to happen (starting point [4])
  • Clarified
• Ingestion
• Checks
  • swh: extid of type "nar-%" got written in the archive

[1] unstable debian build is ko but the pypi release got done

[1'] https://jenkins.softwareheritage.org/job/debian/job/packages/job/DLDBASE/job/gbp-buildpackage/298/console

[2] It's nowhere to be found so noop

[3]

select * from listed_origins where lister_id=(select id from listers where name='nixguix' and instance_name='guix.gnu.org') and visit_type in ('content', 'directory') and (extra_loader_arguments#>>'{"checksums_computation"}'<>'standard' and extra_loader_arguments#>>'{"checksum_layout"}'<>'standard');

[4] #4868 (comment 137800)

Refs. swh/meta#4979 (closed)