3.11.28 release notes (backport #10212) (backport #10213)

release-notes/3.11.28.md

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+RabbitMQ `3.11.28` is a maintenance release in the `3.11.x` [release series](https://www.rabbitmq.com/versions.html).
+This release series [goes out of community support on Dec 31, 2023](https://rabbitmq.com/versions.html).
+
+Please refer to the upgrade section from [v3.11.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.11.0)
+if upgrading from a version prior to 3.11.0.
+
+This release requires Erlang 25 and supports Erlang versions up to `25.3.x`.
+[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on
+Erlang version requirements for RabbitMQ.
+
+
+### Minimum Supported Erlang Version
+
+As of 3.11.0, RabbitMQ requires Erlang 25. Nodes **will fail to start** on older Erlang releases.
+
+Erlang 25 as our new baseline means much improved performance on ARM64 architectures, [profiling with flame graphs](https://blog.rabbitmq.com/posts/2022/05/flame-graphs/)
+across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.
+
+
+## Changes Worth Mentioning
+
+Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/main/release-notes).
+
+
+### Prometheus Plugin
+
+#### Enhancements
+
+ * Metric label values now escape certain non-ASCII characters.
+
+   Contributed by @gomoripeti (CloudAMQP).
+
+   GitHub issue: [#10196](https://github.com/rabbitmq/rabbitmq-server/pull/10196)
+
+
+### Management Plugin
+
+#### Bug Fixes
+
+ * Reverted a change to `DELETE /api/queues/{vhost}/{name}` that allowed removal of
+   exclusive queues and introduced unexpected side effects.
+
+   GitHub issue: [#10189](https://github.com/rabbitmq/rabbitmq-server/pull/10189)
+
+ * Avoid log noise when an HTTP API request is issued against a booting
+   or very freshly booted node.
+
+   Contributed by @gomoripeti (CloudAMQP).
+
+   GitHub issue: [#10183](https://github.com/rabbitmq/rabbitmq-server/pull/10183)
+
+
+### AWS Peer Discovery Plugin
+
+#### Enhancements
+
+ * Type spec and test corrections.
+
+   Contributed by @illotum (AWS).
+
+   GitHub issue: [#10133](https://github.com/rabbitmq/rabbitmq-server/pull/10133)
+
+
+## Dependency Upgrades
+
+ None in this release.
+
+
+## Source Code Archives
+
+To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.11.28.tar.xz`
+instead of the source tarball produced by GitHub.