fix(deps): bump @apielements/openapi2-parser from 0.30.0 to 0.31.0

Bumps [@apielements/openapi2-parser](https://github.com/apiaryio/api-elements.js/tree/HEAD/packages/openapi2-parser) from 0.30.0 to 0.31.0.
- [Release notes](https://github.com/apiaryio/api-elements.js/releases)
- [Changelog](https://github.com/apiaryio/api-elements.js/blob/master/packages/openapi2-parser/CHANGELOG.md)
- [Commits](https://github.com/apiaryio/api-elements.js/commits/@apielements/openapi2-parser@0.31.0/packages/openapi2-parser)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

packages/dredd-transactions/package.json

@@ -27,7 +27,7 @@
   ],
   "dependencies": {
     "@apielements/apib-parser": "0.19.0",
-    "@apielements/openapi2-parser": "0.30.0",
+    "@apielements/openapi2-parser": "0.31.0",
     "@apielements/openapi3-parser": "0.12.1",
     "fury": "3.0.0-beta.14",
     "uri-template": "1.0.1"

yarn.lock

@@ -12,10 +12,10 @@
   optionalDependencies:
     protagonist "^2.1.0"
 
-"@apielements/openapi2-parser@0.30.0":
-  version "0.30.0"
-  resolved "https://registry.yarnpkg.com/@apielements/openapi2-parser/-/openapi2-parser-0.30.0.tgz#ff5d820fa90fec17c5ec726b7be4e33aeeb5fdf9"
-  integrity sha512-yXPdgTUiIhC8Gg3Q4rDfuFs8i4WD139Tn8qFIWocHSbKHLZ36VNox15lWZKGUMKZ67u6cXTtKHyS4cwHILFflQ==
+"@apielements/openapi2-parser@0.31.0":
+  version "0.31.0"
+  resolved "https://registry.yarnpkg.com/@apielements/openapi2-parser/-/openapi2-parser-0.31.0.tgz#b5a27921dbc36a5c484ef67fe051212f900ce924"
+  integrity sha512-1+4SIjtLfLiP5e2ew/kEVjhkcw5bAzWPx46Cls8c4JAlQNyNXfDAKmnxZk3fxWtW0BjBj+UafhVuiu3QHEoiwQ==
   dependencies:
     content-type "^1.0.4"
     js-yaml "^3.12.0"