Use optionalDependencies

package.json

@@ -34,7 +34,6 @@
 		"@discordjs/collection": "^0.1.5",
 		"@discordjs/opus": "^0.1.0",
 		"@vitalets/google-translate-api": "^3.0.0",
-		"bufferutil": "^4.0.1",
 		"canvas": "^2.6.1",
 		"cheerio": "^1.0.0-rc.3",
 		"cloc": "^2.5.1",
@@ -51,9 +50,12 @@
 		"node-superfetch": "^0.1.10",
 		"random-js": "^2.1.0",
 		"soap": "^0.31.0",
-		"utf-8-validate": "^5.0.2",
 		"winston": "^3.2.1"
 	},
+	"optionalDependencies": {
+		"bufferutil": "^4.0.1",
+		"utf-8-validate": "^5.0.2"
+	},
 	"devDependencies": {
 		"eslint": "^6.8.0",
 		"eslint-config-amber": "^2.0.1",