Update dependency plausible-tracker to v0.3.9

Author: renovate[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "@popperjs/core": "2.11.8",
     "bootstrap": "5.3.3",
     "codemirror": "5.65.16",
-    "plausible-tracker": "0.3.8",
+    "plausible-tracker": "0.3.9",
     "reconnecting-websocket": "4.4.0"
   },
   "devDependencies": {