chore: use github's shared prettier-config

package.json

@@ -21,6 +21,7 @@
     "all": "npm run format:write && npm run lint && npm run test && npm run package"
   },
   "license": "MIT",
+  "prettier": "@github/prettier-config",
   "dependencies": {
     "@actions/core": "^1.11.1",
     "@modelcontextprotocol/sdk": "^1.15.1",
@@ -33,9 +34,12 @@
     "@azure/core-sse": "latest",
     "@eslint/compat": "^1.3.0",
     "@github/local-action": "^5.1.0",
+    "@github/prettier-config": "^0.0.6",
     "@rollup/plugin-commonjs": "^28.0.5",
+    "@rollup/plugin-json": "^6.1.0",
     "@rollup/plugin-node-resolve": "^16.0.1",
     "@rollup/plugin-typescript": "^12.1.2",
+    "@types/js-yaml": "^4.0.9",
     "@types/node": "^22.15.31",
     "@typescript-eslint/eslint-plugin": "^8.34.0",
     "@typescript-eslint/parser": "^8.32.1",
@@ -48,9 +52,7 @@
     "prettier-eslint": "^16.4.2",
     "rollup": "^4.43.0",
     "typescript": "^5.8.3",
-    "vitest": "^3",
-    "@rollup/plugin-json": "^6.1.0",
-    "@types/js-yaml": "^4.0.9"
+    "vitest": "^3"
   },
   "optionalDependencies": {
     "@rollup/rollup-linux-x64-gnu": "*"