Bump grape_logging gem to 1.7.0 to get status codes for error messages

This recent update fixes an issue in grape_logging where the status
code would be "fail" for any non-20x responses. For more details, see:
https://github.com/aserafin/grape_logging/issues/29

Gemfile

@@ -407,4 +407,4 @@ gem 'flipper-active_record', '~> 0.10.2'
 
 # Structured logging
 gem 'lograge', '~> 0.5'
-gem 'grape_logging', '~> 1.6'
+gem 'grape_logging', '~> 1.7'

Gemfile.lock

@@ -355,7 +355,7 @@ GEM
       activesupport
       grape (>= 0.16.0)
       rake
-    grape_logging (1.6.0)
+    grape_logging (1.7.0)
       grape
     grpc (1.4.5)
       google-protobuf (~> 3.1)
@@ -1037,7 +1037,7 @@ DEPENDENCIES
   grape (~> 1.0)
   grape-entity (~> 0.6.0)
   grape-route-helpers (~> 2.1.0)
-  grape_logging (~> 1.6)
+  grape_logging (~> 1.7)
   haml_lint (~> 0.26.0)
   hamlit (~> 2.6.1)
   hashie-forbidden_attributes