Update dependencies for 5.6 (#24)

build/manifest/Gopkg.lock

@@ -1,6 +1,14 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  digest = "1:705c40022f5c03bf96ffeb6477858d88565064485a513abcd0f11a0911546cb6"
+  name = "github.com/blang/semver"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "2ee87856327ba09384cabd113bc6b5d174e9ec0f"
+  version = "v3.5.1"
+
 [[projects]]
   branch = "master"
   digest = "1:bc36a17a513f15717b5fa3dcfd666f5ddb6fd3db06f5f2834ac2f5979d4f5070"
@@ -10,7 +18,7 @@
   revision = "5ed622c449da6d44c3c8329331ff47a9e5844f71"
 
 [[projects]]
-  digest = "1:771649e04a49766e04f498731699e62874ffa2439a071294fde36d61b2db0685"
+  digest = "1:1cebd7208d10c6f20d5fd71c9c7062fea74524842db93fec2993fb5ea4975c73"
   name = "github.com/mattermost/mattermost-server"
   packages = [
     "mlog",
@@ -19,8 +27,8 @@
     "utils/markdown",
   ]
   pruneopts = "UT"
-  revision = "d5b613cb1bbdaa856fa126e7102d94783b9e80b6"
-  version = "v5.4.0"
+  revision = "0c1207215852a8726c3f09dea157d597fec368df"
+  version = "v5.6.0"
 
 [[projects]]
   digest = "1:07140002dbf37da92090f731b46fa47be4820b82fe5c14a035203b0e813d0ec2"