Update rabbitmq

Changes:

- https://github.com/docker-library/rabbitmq/commit/0dd47d6: Merge pull request https://github.com/docker-library/rabbitmq/pull/531 from J0WI/alpine-3.15
- https://github.com/docker-library/rabbitmq/commit/4b78ecf: Alpine 3.15

library/rabbitmq

@@ -16,7 +16,7 @@ Directory: 3.9/ubuntu/management
 
 Tags: 3.9.10-alpine, 3.9-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 5ec7771d821917f6839d682ab04101f4d87a8daf
+GitCommit: 4b78ecfaf2e2223e9e874268c4903ec51a9ff515
 Directory: 3.9/alpine
 
 Tags: 3.9.10-management-alpine, 3.9-management-alpine, 3-management-alpine, management-alpine
@@ -36,7 +36,7 @@ Directory: 3.8/ubuntu/management
 
 Tags: 3.8.26-alpine, 3.8-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: c4b367a714a455b8cb98aefac7f4870c74bace40
+GitCommit: 4b78ecfaf2e2223e9e874268c4903ec51a9ff515
 Directory: 3.8/alpine
 
 Tags: 3.8.26-management-alpine, 3.8-management-alpine