Add support for .gitlab-ci.yaml files

Author: Antonio Spadaro

.pre-commit-hooks.yaml

@@ -160,7 +160,7 @@
   description: 'Validate GitLab CI config against the schema provided by SchemaStore'
   entry: check-jsonschema --builtin-schema vendor.gitlab-ci --data-transform gitlab-ci --regex-variant nonunicode
   language: python
-  files: ^.*\.gitlab-ci\.yml$
+  files: ^.*\.gitlab-ci\.(yml|yaml)$
   types: [yaml]
 
 # this hook is autogenerated from a script