[Dev Deps] add missing peer dep

Author: ljharb

package.json

@@ -14,6 +14,7 @@
 	"devDependencies": {
 		"@ljharb/eslint-config": "^21.1.1",
 		"auto-changelog": "^2.5.0",
+		"encoding": "^0.1.13",
 		"eslint": "=8.8.0",
 		"evalmd": "^0.0.19",
 		"in-publish": "^2.0.1",