chore: update schema version and refine file inclusions in biome.jsonc

- Updated the schema version from 2.4.4 to 2.4.6 for improved validation.
- Added a comment to ignore the invalid syntax fixture in the file inclusions, enhancing clarity on ignored files.

Author: goosewobbler

biome.jsonc

@@ -1,10 +1,11 @@
 {
-  "$schema": "https://biomejs.dev/schemas/2.4.4/schema.json",
+  "$schema": "https://biomejs.dev/schemas/2.4.6/schema.json",
   "vcs": { "enabled": false, "clientKind": "git", "useIgnoreFile": false },
   "files": {
     "ignoreUnknown": false,
     "includes": [
       "**",
+      // ignore the invalid syntax fixture
       "!fixtures/config-formats/invalid-syntax.ts",
       // ignore coverage files
       "!**/coverage",