Fix rubocop errors due to Rubocop 0.51.0 -> 0.53.0 bump

.rubocop_todo.yml

@@ -8,7 +8,7 @@
 
 # Configuration parameters: AlignWith, SupportedStyles, AutoCorrect.
 # SupportedStyles: keyword, variable, start_of_line
-Lint/EndAlignment:
+Layout/EndAlignment:
   Enabled: false
 
 Lint/AmbiguousOperator:

Gemfile

@@ -21,7 +21,7 @@ group :development, :test do
   gem 'factory_bot'
   gem 'ffaker'
   gem 'pry-byebug'
-  gem 'rubocop', '~> 0.51'
+  gem 'rubocop', '~> 0.53.0'
 end
 
 group :test do

lib/gruf/client.rb

@@ -135,13 +135,13 @@ def streaming_request?(request_method)
     #
     # @param [Symbol] call_sig The call signature being executed
     # @param [Object] req (Optional) The protobuf request message to send
-    # @param [Hash] md (Optional) A hash of metadata key/values that are transported with the client request
+    # @param [Hash] metadata (Optional) A hash of metadata key/values that are transported with the client request
     # @param [Hash] opts (Optional) A hash of options to send to the gRPC request_response method
     #
-    def execute(call_sig, req, md, opts = {}, &block)
+    def execute(call_sig, req, metadata, opts = {}, &block)
       Timer.time do
         opts[:return_op] = true
-        opts[:metadata] = md
+        opts[:metadata] = metadata
         send(call_sig, req, opts, &block)
       end
     end

lib/gruf/error.rb

@@ -112,10 +112,11 @@ def set_debug_info(detail, stack_trace = [])
     ##
     # Ensure all metadata values are strings as HTTP/2 requires string values for transport
     #
+    # @param [Hash] metadata The existing metadata hash
     # @return [Hash] The newly set metadata
     #
-    def metadata=(md)
-      @metadata = md.map { |k, str| [k, str.to_s] }.to_h
+    def metadata=(metadata)
+      @metadata = metadata.map { |k, str| [k, str.to_s] }.to_h
     end
 
     ##

lib/gruf/response.rb

@@ -34,16 +34,16 @@ class Response
     ##
     # Initialize a response object with the given gRPC operation
     #
-    # @param [GRPC::ActiveCall::Operation] op The given operation for the current call
+    # @param [GRPC::ActiveCall::Operation] operation The given operation for the current call
     # @param [Float] execution_time The amount of time that the response took to occur
     #
-    def initialize(op, execution_time = nil)
-      @operation = op
-      @message = op.execute
-      @metadata = op.metadata
-      @trailing_metadata = op.trailing_metadata
-      @deadline = op.deadline
-      @cancelled = op.cancelled?
+    def initialize(operation, execution_time = nil)
+      @operation = operation
+      @message = operation.execute
+      @metadata = operation.metadata
+      @trailing_metadata = operation.trailing_metadata
+      @deadline = operation.deadline
+      @cancelled = operation.cancelled?
       @execution_time = execution_time || 0.0
     end
 
@@ -53,7 +53,7 @@ def initialize(op, execution_time = nil)
     # @return [Object] The protobuf response message
     #
     def message
-      @message ||= op.execute
+      @message ||= @operation.execute
     end
 
     ##