fix(deps): update dependency @actions/io to v2

Author: renovate[bot]

gh-actions/github/mutex/package-lock.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/exec": "^1.1.1",
-    "@actions/io": "^1.1.3"
+    "@actions/io": "^2.0.0"
   },
   "devDependencies": {
     "@types/node": "^22.0.0",