Update rabbitmq

Changes:

- https://github.com/docker-library/rabbitmq/commit/ca825ec: Update to 3.8.5-rc.1, Erlang/OTP 23.0.2, OpenSSL 1.1.1g

library/rabbitmq

@@ -4,6 +4,26 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/rabbitmq.git
 
+Tags: 3.8.5-rc.1, 3.8-rc
+Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
+GitCommit: ca825ec6e24c0688b0ce069696b57301193668ee
+Directory: 3.8-rc/ubuntu
+
+Tags: 3.8.5-rc.1-management, 3.8-rc-management
+Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
+GitCommit: 13ec1c85a0882184b0bbaab2216822e7a3718d30
+Directory: 3.8-rc/ubuntu/management
+
+Tags: 3.8.5-rc.1-alpine, 3.8-rc-alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
+GitCommit: ca825ec6e24c0688b0ce069696b57301193668ee
+Directory: 3.8-rc/alpine
+
+Tags: 3.8.5-rc.1-management-alpine, 3.8-rc-management-alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
+GitCommit: 13ec1c85a0882184b0bbaab2216822e7a3718d30
+Directory: 3.8-rc/alpine/management
+
 Tags: 3.8.4, 3.8, 3, latest
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 88ac0b2054040237276a30c1494d2b29030889f0