Update mongo

Changes:

- https://github.com/docker-library/mongo/commit/5761b49: Update 4.2-rc to 4.2.15-rc0

library/mongo

@@ -85,6 +85,33 @@ GitCommit: dc35ba55761b2f03ce2f79ff3b79783b15e23dae
 Directory: 4.4/windows/nanoserver-1809
 Constraints: nanoserver-1809, windowsservercore-1809
 
+Tags: 4.2.15-rc0-bionic, 4.2-rc-bionic
+SharedTags: 4.2.15-rc0, 4.2-rc
+Architectures: amd64, arm64v8
+GitCommit: 5761b490a391393ba4804dd171e8f4f2608b6d2d
+Directory: 4.2-rc
+
+Tags: 4.2.15-rc0-windowsservercore-1809, 4.2-rc-windowsservercore-1809
+SharedTags: 4.2.15-rc0-windowsservercore, 4.2-rc-windowsservercore, 4.2.15-rc0, 4.2-rc
+Architectures: windows-amd64
+GitCommit: 5761b490a391393ba4804dd171e8f4f2608b6d2d
+Directory: 4.2-rc/windows/windowsservercore-1809
+Constraints: windowsservercore-1809
+
+Tags: 4.2.15-rc0-windowsservercore-ltsc2016, 4.2-rc-windowsservercore-ltsc2016
+SharedTags: 4.2.15-rc0-windowsservercore, 4.2-rc-windowsservercore, 4.2.15-rc0, 4.2-rc
+Architectures: windows-amd64
+GitCommit: 5761b490a391393ba4804dd171e8f4f2608b6d2d
+Directory: 4.2-rc/windows/windowsservercore-ltsc2016
+Constraints: windowsservercore-ltsc2016
+
+Tags: 4.2.15-rc0-nanoserver-1809, 4.2-rc-nanoserver-1809
+SharedTags: 4.2.15-rc0-nanoserver, 4.2-rc-nanoserver
+Architectures: windows-amd64
+GitCommit: 5761b490a391393ba4804dd171e8f4f2608b6d2d
+Directory: 4.2-rc/windows/nanoserver-1809
+Constraints: nanoserver-1809, windowsservercore-1809
+
 Tags: 4.2.14-bionic, 4.2-bionic
 SharedTags: 4.2.14, 4.2
 Architectures: amd64, arm64v8