chore(deps): update strimzi-kafka-operator docker tag to v0.51.0

[renovate]

This PR contains the following updates:

Package	Update	Change
strimzi-kafka-operator (source)	minor	0.49.1 → 0.51.0

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Release Notes

strimzi/strimzi-kafka-operator (strimzi-kafka-operator)

v0.51.0

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• Add support for Kafka 4.2.0 and remove support for Kafka 4.0.0 and 4.0.1
• Allow setting the following configurations with the listener prefix (e.g. listener.name.listener1-9900.): connections.max.reauth.ms, max.connections* and max.connection.creation.rate.
• The ServerSideApplyPhase1 feature gate moves to beta stage and is enabled by default.
  If needed, ServerSideApplyPhase1 can be disabled in the feature gates configuration in the Cluster Operator.
• Fixed auto-rebalancing on scale up not running anymore when Cruise Control is not ready yet on the first attempt.

Major changes, deprecations, and removals

• From Strimzi 0.51 on, we support only Kubernetes 1.30 and newer.
  Kubernetes 1.27, 1.28, and 1.29 are not supported anymore.
• The ingress listener type is deprecated due to the archiving of the Ingress NGINX Controller for Kubernetes (March 2026).
  The code remains in the Strimzi codebase, but no further improvements or development are planned.

v0.50.1

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• Fixes CVE-2026-27133
• Fixes CVE-2026-27134
• Include the full CA chain in broker certificates
• v1 API Conversion Tool bug fixes (handling of number conversions and empty YAML documents)

v0.50.0

Compare Source

• Use Java 21 as the runtime and language level
• Strimzi Drain Cleaner updated to 1.5.0 (included in the Strimzi installation files)
• Support for Linux user namespaces in Strimzi Pods through the hostUsers Pod option

Major changes, deprecations, and removals

• Strimzi Operators are now using Java 21 as the runtime and language level.
  The only exceptions are the api, test, crd-annotations, and crd-generator modules which use Java 11 as the language level for compatibility with older java versions.
  These modules will remain using the Java 11 language level up to and including Strimzi 0.51.
  They will move to Java 21 language level in Strimzi 1.0.0.
  If you use one of these modules as a dependency in your Java project, you will need to upgrade to Java 21 as well.
• connector.plugin.version option is now forbidden in KafkaConnect CR in .spec.config and in KafkaMirrorMaker2 CR in .spec.mirrors[].sourceConnector.config and .spec.mirrors[].checkpointConnector.config. Please use the dedicated version field instead.

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