chore(tracking): Release Notes for SDP 25.11.0

[Techassi]

Release Notes for SDP 25.11.0

Caution

Please assign the applicable scheduled-for/25.11.0 label.

Tip

• Use the commented out template headings in release-notes.
• Begin each sentence on a new line. This helps with review suggestions and diffing.
• Use xrefs for links to other parts of the documentation so that they remain valid across versions.

Release note compilation tasks

• Check Issues for Product and Platform release notes
• Check PRs for Product and Platform release notes
• Optionally check the Changelogs in case release notes were missed
• Compile list of new product versions that are supported and compile a list of new product features to include in the Release Highlights
• Upgrade guide: Document how to use stackablectl to uninstall all and install new release
• Upgrade guide: Document how to use helm to uninstall all and install new release
• Upgrade guide: Every breaking change of all our operators
• Upgrade guide: List removed product versions (if there are any)
• Upgrade guide: List removed operators (if there are any)
• Upgrade guide: List supported Kubernetes versions

Each of the following tasks focuses on a specific goal and should be done once the items above have been completed.

Release note review tasks

• Check overall document structure
• Check spelling, grammar, and correct wording
• Check that internal links are xrefs
• Check that rendered links are valid
• Check that each sentence begins on a new line

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[sbernauer]

I looked through all changelogs (except docker images) and checked if I could find entries where I couldn't find anything here.
These are my findings. I might just overlooked them here

### stackable-operator

- BREAKING: Add two new required CLI arguments: `--operator-namespace` and `--operator-service-name`.
  These two values are used to construct the service name in the CRD conversion webhook ([#1066]).

### secret-operator

I only noticed the `TODO: Should we list the changes explicitly like we did for listener-operator above?`, so once that is resolved all fine

### kafka-operator

- Add experimental support for Kafka KRaft mode ([#889]).
- Add `client.properties` to the Kafka configuration config map ([#898]).

  Use this file together with the Kafka client shell scripts and preconfigured TLS settings.
  Unfortunately, when Kerberos is enabled this file is incomplete and must be edited first before it can be used.
- BREAKING: The `<cluster>-<role>-<rolegroup>` rolegroup service was replaced with a `<cluster>-<role>-<rolegroup>-headless`
  and `<cluster>-<role>-<rolegroup>-metrics` rolegroup service ([#897]).

### spark-operator

- SparkConnectServer: The `imagePullSecret` is now correctly passed to Spark executor pods ([#603]).

[Techassi]

### spark-operator

- SparkConnectServer: The `imagePullSecret` is now correctly passed to Spark executor pods ([#603]).

This one is included in Platform fixes > Apache Spark.

[sbernauer]

This one is included in Platform fixes > Apache Spark.

Awesome, thx! I searched for imagePullSecret and didn't find it 🙈