Fix new rubocop warnings

app/models/node.rb

@@ -207,7 +207,7 @@ class Node < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[node_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= node_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :tags

app/models/old_node.rb

@@ -105,7 +105,7 @@ class OldNode < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= old_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :tags

app/models/old_relation.rb

@@ -83,7 +83,7 @@ class OldRelation < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= old_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :members, :tags

app/models/old_way.rb

@@ -81,7 +81,7 @@ class OldWay < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= old_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :nds, :tags

app/models/relation.rb

@@ -131,7 +131,7 @@ class Relation < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[relation_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= relation_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :members, :tags

app/models/way.rb

@@ -113,7 +113,7 @@ class Way < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[way_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= way_tags.collect { |t| [t.k, t.v] }.to_h
   end
 
   attr_writer :nds, :tags