change yarn commands to pnpm

apps/pdf-converter/package.json

@@ -7,9 +7,9 @@
   "private": true,
   "scripts": {
     "dev:pdf-converter": "nodemon --watch \"src/**/*.ts\" --ignore \"node_modules/**/*\" --exec ts-node -r \"dotenv-flow/config\" src/index.ts",
-    "lint": "yarn eslint **/*.{js,ts}",
+    "lint": "pnpm eslint **/*.{js,ts}",
     "gen:client-code": "tsed run generate-swagger --output ./specs && orval",
-    "build": "yarn gen:client-code && tsc -p tsconfig.build.json"
+    "build": "pnpm gen:client-code && tsc -p tsconfig.build.json"
   },
   "dependencies": {
     "@tsed/cli": "^5.4.3",