Address rubocop issues

Author: timriley

lib/hanami/router/formatter/csv.rb

@@ -37,7 +37,7 @@ class CSV
         # @api private
         # @since 2.0.0
         def call(routes, **csv_opts)
-          ::CSV.generate(**DEFAULT_OPTIONS.merge(csv_opts)) do |csv|
+          ::CSV.generate(**DEFAULT_OPTIONS, **csv_opts) do |csv|
             csv << HEADERS if csv.write_headers?
             routes.reduce(csv) do |acc, route|
               route.head? ? acc : acc << row(route)

lib/hanami/router/node.rb

@@ -39,7 +39,6 @@ def put(segment, constraints)
       def get(segment) # rubocop:disable Metrics/PerceivedComplexity
         return unless @variable || @fixed
 
-        found = nil
         captured = nil
 
         found = @fixed&.fetch(segment, nil)