Bump dependency on acorn in acorn-loose

Author: marijnh

acorn-loose/package.json

@@ -21,7 +21,7 @@
     "node": ">=0.4.0"
   },
   "dependencies": {
-    "acorn": "^8.14.0"
+    "acorn": "^8.15.0"
   },
   "maintainers": [
     {