Update rabbitmq

Changes:

- docker-library/rabbitmq@34c247b: Merge pull request docker-library/rabbitmq#769 from infosiftr/4.2-rc
- docker-library/rabbitmq@aaf82bf: Add 4.2.0-beta.1

Author: docker-library-bot

library/rabbitmq

@@ -5,6 +5,26 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
 GitRepo: https://github.com/docker-library/rabbitmq.git
 Builder: buildkit
 
+Tags: 4.2.0-beta.1, 4.2-rc
+Architectures: amd64, arm32v7, arm64v8, ppc64le, riscv64, s390x
+GitCommit: aaf82bfff4fd5ee6c98ec4ce7815e7e580066892
+Directory: 4.2-rc/ubuntu
+
+Tags: 4.2.0-beta.1-management, 4.2-rc-management
+Architectures: amd64, arm32v7, arm64v8, ppc64le, riscv64, s390x
+GitCommit: aaf82bfff4fd5ee6c98ec4ce7815e7e580066892
+Directory: 4.2-rc/ubuntu/management
+
+Tags: 4.2.0-beta.1-alpine, 4.2-rc-alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+GitCommit: aaf82bfff4fd5ee6c98ec4ce7815e7e580066892
+Directory: 4.2-rc/alpine
+
+Tags: 4.2.0-beta.1-management-alpine, 4.2-rc-management-alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+GitCommit: aaf82bfff4fd5ee6c98ec4ce7815e7e580066892
+Directory: 4.2-rc/alpine/management
+
 Tags: 4.1.3, 4.1, 4, latest
 Architectures: amd64, arm32v7, arm64v8, ppc64le, riscv64, s390x
 GitCommit: b499e6df24978959d526acddcdc4a4842091533b