Update catalog and changelog to match contribution

Author: sirosen

CHANGELOG.rst

@@ -11,6 +11,8 @@ Unreleased
 .. vendor-insert-here
 
 - Update vendored schemas (2023-02-18)
+- The ``check-dependabot`` hook now also supports ``.github/dependabot.yaml``
+  Thanks :user:`noorul`!
 
 0.21.0
 ------

src/check_jsonschema/catalog.py

@@ -60,7 +60,7 @@ def _githubusercontent_url(owner: str, repo: str, ref: str, path: str) -> str:
         "url": "https://json.schemastore.org/dependabot-2.0.json",
         "hook_config": {
             "name": "Validate Dependabot Config (v2)",
-            "files": r"^\.github/dependabot.yml$",
+            "files": r"^\.github/dependabot.(yml|yaml)$",
             "types": "yaml",
         },
     },