v283.1.13

Updates:

• Updates nats-server from 2.15.0 to 2.15.1

What's Changed

• fix: increase timeout to address flake by @aramprice in #2829
• Discover Jammy FIPS stemcells from the private GCS bucket by @KauzClay in #2830

Full Changelog: v283.1.12...v283.1.13