Update Helm release rabbitmq to 12.15.x (main)

[funkypenguin-autochef]

This PR contains the following updates:

Package	Update	Change
rabbitmq (source)	minor	12.12.x -> 12.15.x

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Release Notes

bitnami/charts (rabbitmq)

v12.15.0

• [bitnami/rabbitmq] feat: :sparkles: :lock: Add automatic adaptation for Openshift restricted-v2 SCC (63a0cc3), closes #​24146

v12.14.1

• [bitnami/rabbitmq] fix error dereferencing nil resources (#​23616) (f75c6a8), closes #​23616 #​23607

v12.14.0

• [bitnami/rabbitmq] feat: :sparkles: :lock: Add readOnlyRootFilesystem support (#​23745) (68a606e), closes #​23745

v12.13.2

• [bitnami/rabbitmq] Release 12.13.2 updating components versions (#​23825) (5dbad69), closes #​23825

v12.13.1

• [bitnami/rabbitmq] Release 12.13.1 updating components versions (#​23691) (1bf88ab), closes #​23691

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