Package.json: Lock eslint version

eslint is removing their style linting, so this is a stopgap measure to prevent that.

Author: mia-pi-git

package.json

@@ -79,7 +79,7 @@
     "@types/sockjs": "^0.3.33",
     "@typescript-eslint/eslint-plugin": "^5.8.0",
     "@typescript-eslint/parser": "^5.8.0",
-    "eslint": "^8.5.0",
+    "eslint": "8.5.0",
     "mocha": "^8.2.0",
     "smogon": "^3.0.0",
     "typescript": "^5.0.4"