chore(deps): update ghcr.io/immich-app/postgres docker tag to v16

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/immich-app/postgres	major	14-vectorchord0.3.0-pgvectors0.2.0 -> 16-vectorchord0.3.0-pgvectors0.2.0

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[renovate]

Renovate Ignore Notification

Because you closed this PR without merging, Renovate will ignore this update. You will not get PRs for any future 16.x releases. But if you manually upgrade to 16.x then Renovate will re-enable minor and patch updates automatically.

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