chore(rubocop): allow use of YAML.load for _mapdata.rb [skip ci]

* Automated using myii/ssf-formula#296

Author: baby-gnu

.rubocop.yml

@@ -12,5 +12,8 @@ Metrics/BlockLength:
     - describe
   # Increase from default of `25`
   Max: 30
+Security/YAMLLoad:
+  Exclude:
+    - test/integration/**/_mapdata.rb
 
 # Any offenses that should be fixed, e.g. collected via. `rubocop --auto-gen-config`