chore(deps): update dependency acorn to v8.15.0

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| npm        | acorn   | 8.12.1 | 8.15.0 |

Author: renovate[bot]

package-lock.json

@@ -56,7 +56,7 @@
     "darwin"
   ],
   "devDependencies": {
-    "acorn": "8.12.1",
+    "acorn": "8.15.0",
     "acorn-jsx": "5.3.2",
     "chai": "4.5.0",
     "chai-http": "4.4.0",