Add Trino Gateway 16 release notes

[mosabua]

Description

Assemble the release notes for Trino Gateway 16 release and adjust rest of docs to version 16.

Release date is set to the planned date following our monthly release cadence.

Additional context and related issues

• Helm chart release PR to merge after the release - Release Trino Gateway chart 1.16.0 charts#359

Release notes

(x) This is not user-visible or is docs only, and no release notes are required.

Verification for each pull request

Format: PR/issue number, ✅ / ❌ rn ✅ / ❌ docs
✅ rn - release note added and verified, or assessed to be not necessary, set to ❌ rn before completion
✅ docs - need for docs assessed and merged, or assessed to be not necessary, set to ❌ docs before completion

Any dates missing in the list just had no merged PRs.

7 Apr 2025

• Update dependencies #659 ✅ rn ✅ docs

10 Apr 2025

• Show RoutingGroup info in query history #607 ✅ rn ✅ docs

16 Apr 2025

• Allow USER role to get UI Configuration #664 ✅ rn ✅ docs

23 Apr 2025

• Update operation.md #676 ✅ rn ✅ docs

27 Apr 2025

• Add Header Modification Support to External Routing Service #654 ✅ rn ✅ docs

12 May 2025

• Let Guice manage dependencies in router modules #683 ✅ rn ✅ docs

21 May 2025

• Replace String concat with toStringHelper() in MVELRoutingRule #685 ✅ rn ✅ docs

28 May 2025

• Update routing-logic.md #691 ✅ rn ✅ docs
• Replace backend with cluster in security.md #690 ✅ rn ✅ docs
• Update dependencies #689 ✅ rn ✅ docs
• Improve logging for backend cluster (de)activation #672 ✅ rn ✅ docs

5 Jun 2025

• Remove unnecessary @Inject in HaGatewayProviderModule #696 ✅ rn ✅ docs

11 Jun 2025

• Use Airlift Duration in MonitorConfiguration #695 ✅ rn ✅ docs

16 Jun 2025

• Make externalHeaders optional in external service response #700 ✅ rn ✅ docs

17 Jun 2025

• Improve properties handling for DB JDBC connection #651 ✅ rn ✅ docs

18 Jun 2025

• Add cluster activation status metric and emit to v1/jmx #673 ✅ rn ✅ docs

20 Jun 2025

• Rename RoutedTo to Name field in Query History page #639 ✅ rn ✅ docs
• Allow replacing test config with environment variable #698 ✅ rn ❌ docs

23 Jun 2025

• Use OptionalBinder for RoutingManager #697 ✅ rn ✅ docs

24 Jun 2025

• Fix mistake in deactivation status log #704 ✅ rn ✅ docs

[RoeyoOgen]

Would love to get #687 in as well. Just awaiting merge :)