is flyctl image new version resolving logic working as expected?

[kubosuke]

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Describe the bug
Briefly, describe what broke and provide the following details:

is it resolving new image correctly?
If I'm not mistaken, if we unspecify minor version it always points the latest minor among them (e.g. psql 16 -> psql 16.13 (if .13 is the latest))

but currently the fly suggest the older minor image: flyio/postgres-flex:16 (v0.2.0) -> flyio/postgres-flex:16.6 (v0.1.0)

❯ f image show -a xxxxx
Updates available:

Machine "28714d6a6e7d28" flyio/postgres-flex:16 (v0.2.0) -> flyio/postgres-flex:16.6 (v0.1.0)
Machine "287e64eb601e78" flyio/postgres-flex:16 (v0.2.0) -> flyio/postgres-flex:16.6 (v0.1.0)
Machine "48e6d92c725d48" flyio/postgres-flex:16 (v0.2.0) -> flyio/postgres-flex:16.6 (v0.1.0)

Run `flyctl image update` to migrate to the latest image version.
Image Details
 MACHINE ID     │ REGISTRY                 │ REPOSITORY          │ TAG │ VERSION │ DIGEST                                                                  │ LABELS
 28714d6a6e7d28 │ docker-hub-mirror.fly.io │ flyio/postgres-flex │ 16  │ v0.2.0  │ sha256:2a9e786af061745f4cb37b19202f1d2ebeaa56a4ec35afb2ca611a071229859b │ fly.app_role=postgres_clusterfly.pg-manager=repmgrfly.pg-version=16.11fly.version=v0.2.0org.opencontainers.image.version=24.04
 287e64eb601e78 │ docker-hub-mirror.fly.io │ flyio/postgres-flex │ 16  │ v0.2.0  │ sha256:2a9e786af061745f4cb37b19202f1d2ebeaa56a4ec35afb2ca611a071229859b │ org.opencontainers.image.version=24.04fly.app_role=postgres_clusterfly.pg-manager=repmgrfly.pg-version=16.11fly.version=v0.2.0
 48e6d92c725d48 │ docker-hub-mirror.fly.io │ flyio/postgres-flex │ 16  │ v0.2.0  │ sha256:2a9e786af061745f4cb37b19202f1d2ebeaa56a4ec35afb2ca611a071229859b │ fly.version=v0.2.0org.opencontainers.image.version=24.04fly.app_role=postgres_clusterfly.pg-manager=repmgrfly.pg-version=16.11

even if the current one is the latest:

root@48e6d92c725d48:/# psql --version
psql (PostgreSQL) 16.13 (Ubuntu 16.13-1.pgdg24.04+1)

• Operating system
• fly version

❯ f version
fly v0.4.33 darwin/arm64 Commit: 44d56a688d1a979601017402965a6367039b2b72 BuildDate: 2026-04-09T16:02:39Z

** Paste your fly.toml

# paste your config file here

** Command output: **

# paste command output here