fix: relax @eslint/compat eslint peerDependencies constraint

Updated to the suggestion in #106 (comment). This was a breaking change, causing a refresh of our lockfile to generate the following error:

```
 ERR_PNPM_PEER_DEP_ISSUES  Unmet peer dependencies

XXX
└─┬ @eslint/compat 1.2.9
  └── ✕ unmet peer eslint@^9.10.0: found 8.57.0
```

This resolves the breaking change, since I believe @eslint/compat was introduced during the v8 eslint cycle and we don't need to go lower.

Author: kellyselden

packages/compat/package.json

@@ -56,7 +56,7 @@
     "typescript": "^5.4.5"
   },
   "peerDependencies": {
-    "eslint": "^9.10.0"
+    "eslint": "8.40 || 9"
   },
   "peerDependenciesMeta": {
     "eslint": {