Update dependency teapot/status-code to v2

Author: renovate[bot]

composer.json

@@ -17,7 +17,7 @@
         "psr/http-factory": "^1.0",
         "psr/http-message": "^1.0.1",
         "psr/log": "^1.1",
-        "teapot/status-code": "^1.1",
+        "teapot/status-code": "^2.0",
         "thecodingmachine/safe": "^0.1.16"
     },
     "require-dev": {