[Dev Deps] add missing peer dep

Author: ljharb

package.json

@@ -15,6 +15,7 @@
   "devDependencies": {
     "@ljharb/eslint-config": "^21.2.0",
     "auto-changelog": "^2.5.0",
+    "encoding": "^0.1.13",
     "eslint": "=8.8.0",
     "hash-test-vectors": "^1.3.2",
     "tape": "^5.9.0",