fix: remove yarn from dependencies (#98)

* fix: remove yarn from dependencies

* chore: relies on npm-script to resolve prettier

this allow us to remove yarn entirely

Author: amoshydra

package-lock.json

@@ -14,8 +14,8 @@
     "sideEffects": false,
     "scripts": {
         "test": "jest",
-        "format": "yarn prettier . --write",
-        "lint": "yarn prettier . --check",
+        "format": "prettier . --write",
+        "lint": "prettier . --check",
         "coverage": "npx c8 npx jest"
     },
     "prettier": {
@@ -50,8 +50,5 @@
     ],
     "exports": {
         ".": "./src/decimal128.mjs"
-    },
-    "dependencies": {
-        "yarn": "^1.22.21"
     }
 }