v283.1.6

Package Updates:

• Updates nginx from 1.31.3 to 1.31.4

What's Changed

• Restore postgres thread-safety patch; root cause is pg, not Ruby 3 by @colins in #2809
• Fix PostgresVersionHelper#local_version on macOS by @aramprice in #2810
• Spec ignores Stemcell#deployments order by @aramprice in #2811
• docker-cpi image: extract start-docker from start-bosh by @mkocher in #2812

Full Changelog: v283.1.5...v283.1.6