v2026.05.20.2

What's Changed

Internal

• Upgrade local MongoDB to 4.0.19 by @ershad in #5132
• CI: rebalance test containers from 20/48 to 18/50 by @gumclaw in #5144
• CI: fail fast on test failures with 60s grace period by @gumclaw in #5143
• CI: fix early-fail showing 'cancelled' instead of 'failed' by @gumclaw in #5145
• Fix admin stylesheet entrypoint by @gianfrancopiana in #5146

Full Changelog: v2026.05.20.1...v2026.05.20.2