Since Slang is under active development we better fix the version we are using instead of a range

Author: Janther

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "prettier-plugin-solidity",
-  "version": "2.0.0-beta",
+  "version": "2.0.0-beta.1",
   "description": "A Prettier Plugin for automatically formatting your Solidity code.",
   "type": "module",
   "main": "./dist/index.js",
@@ -102,7 +102,7 @@
     "webpack-cli": "^5.1.4"
   },
   "dependencies": {
-    "@nomicfoundation/slang": "^0.16.0",
+    "@nomicfoundation/slang": "0.16.0",
     "@solidity-parser/parser": "^0.18.0",
     "semver": "^7.6.3"
   },