Update rabbitmq

Changes:

- https://github.com/docker-library/rabbitmq/commit/d2e5887: Merge pull request https://github.com/docker-library/rabbitmq/pull/354 from infosiftr/latest-toolchain
- https://github.com/docker-library/rabbitmq/commit/d38a86a: Update RabbitMQ key fetch to keys.openpgp.org per https://github.com/docker-library/rabbitmq/pull/349#issuecomment-511955023
- https://github.com/docker-library/rabbitmq/commit/a17039e: Switch to the "latest-toolchain" packages

library/rabbitmq

@@ -6,7 +6,7 @@ GitRepo: https://github.com/docker-library/rabbitmq.git
 
 Tags: 3.8.0-beta.5, 3.8-rc
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 49f7802ad6096b141de26042c988287b81c48d34
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.8-rc/ubuntu
 
 Tags: 3.8.0-beta.5-management, 3.8-rc-management
@@ -16,7 +16,7 @@ Directory: 3.8-rc/ubuntu/management
 
 Tags: 3.8.0-beta.5-alpine, 3.8-rc-alpine
 Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: 49f7802ad6096b141de26042c988287b81c48d34
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.8-rc/alpine
 
 Tags: 3.8.0-beta.5-management-alpine, 3.8-rc-management-alpine
@@ -26,7 +26,7 @@ Directory: 3.8-rc/alpine/management
 
 Tags: 3.7.17-beta.1, 3.7-rc
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: e1afff47a82c24c639f2e3cc5ed318c45f46e7e9
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.7-rc/ubuntu
 
 Tags: 3.7.17-beta.1-management, 3.7-rc-management
@@ -36,7 +36,7 @@ Directory: 3.7-rc/ubuntu/management
 
 Tags: 3.7.17-beta.1-alpine, 3.7-rc-alpine
 Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: e1afff47a82c24c639f2e3cc5ed318c45f46e7e9
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.7-rc/alpine
 
 Tags: 3.7.17-beta.1-management-alpine, 3.7-rc-management-alpine
@@ -46,7 +46,7 @@ Directory: 3.7-rc/alpine/management
 
 Tags: 3.7.16, 3.7, 3, latest
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 7659c0006dafd166e7b24b00423337b9f8c1cb66
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.7/ubuntu
 
 Tags: 3.7.16-management, 3.7-management, 3-management, management
@@ -56,7 +56,7 @@ Directory: 3.7/ubuntu/management
 
 Tags: 3.7.16-alpine, 3.7-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm64v8, i386, ppc64le, s390x
-GitCommit: 7659c0006dafd166e7b24b00423337b9f8c1cb66
+GitCommit: d38a86acf3433c51359bd6da62668588a4660e2b
 Directory: 3.7/alpine
 
 Tags: 3.7.16-management-alpine, 3.7-management-alpine, 3-management-alpine, management-alpine