Update @stylistic/eslint-plugin to address ESLint v9 conflicts (#13)

Not usually a fan of beta releases in a package like this, but this one
addresses an annoying set of warnings that anyone using _our_ package
would get owing to some outdated dependencies and conflicts with ESLint
v9.

package.json

@@ -1,6 +1,6 @@
 {
   "name" :"@cargosense/eslint-config",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Shareable ESLint configuration.",
   "keywords": [
     "eslint-config",
@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "@eslint/js": "^9.7.0",
-    "@stylistic/eslint-plugin": "^2.3.0",
+    "@stylistic/eslint-plugin": "^2.6.0-beta.0",
     "eslint-plugin-array-func": "^5.0.1",
     "eslint-plugin-jsdoc": "^48.8.3",
     "eslint-plugin-n": "^17.9.0",