Deploy loader.metadata v1.3.1

Contains:

• swh/devel/swh-loader-metadata!15 (merged): Fix metric name (metadata_items_fetched_total -> metadata_items_fetched_total)
• swh/devel/swh-loader-metadata!16 (merged): One more method timed ('flush')
• swh/infra/ci-cd/swh-charts!53 (closed): loader-metadata chart must be evolved to use the storage 'buffer' proxy

plan:

• swh-apps: Rebuild image [1]
• swh/infra/ci-cd/swh-charts!53 (closed): Merge
• swh-charts: Bump new version
• Deploy in staging first
• Check everything is fine
• swh/infra/ci-cd/swh-charts!52 (closed): Merge
• Deploy to production

[1] https://jenkins.softwareheritage.org/job/swh-apps/job/build-docker-image/102/console

mentioned in merge request swh/infra/ci-cd/swh-charts!53 (closed)

changed the description

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changed title from Deploy loader.metadata v1.3.0 to Deploy loader.metadata v1.3.1

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v1.3.1 pushed to pypi

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mentioned in commit swh/infra/ci-cd/swh-charts@bf7e30b6

marked the checklist item swh-apps: Rebuild image [1] as completed

marked the checklist item swh-charts: Bump new version as completed

marked the checklist item swh/infra/ci-cd/swh-charts!53 (closed): Merge as completed

marked the checklist item Deploy in staging first as completed

marked the checklist item Check everything is fine as completed

marked the checklist item swh/infra/ci-cd/swh-charts!52 (closed): Merge as completed

marked the checklist item Deploy to production as completed

deployed ^