Updating supported versions

Author: internalautomation[bot]

nservicebus/upgrades/supported-versions-downstreams.include.md

@@ -432,7 +432,6 @@
 | Version   | Released       | Supported until   | Notes                             |
 |:---------:|:--------------:|:-----------------:|:---------------------------------:|
 | [5.1.x](https://www.nuget.org/packages/NServiceBus.Gateway/5.1.0) | 2024-09-11     | -                 | -                                 |
-| [~~5.0.x~~](https://www.nuget.org/packages/NServiceBus.Gateway/5.0.0) | ~~2024-04-16~~ | ~~2024-12-11~~    | ~~Superseded by 5.1.x~~           |
 | [4.0.x](https://www.nuget.org/packages/NServiceBus.Gateway/4.0.2) | 2022-11-17     | 2026-04-16        | Extended by NServiceBus 8.2.x     |
 | [3.3.x](https://www.nuget.org/packages/NServiceBus.Gateway/3.3.1) | 2022-01-24     | 2024-11-17        | [Extended support](/nservicebus/upgrades/support-policy.md#extended-support) until 2026-11-17 |