hotFix(Readme): change bun to pnpm

README.md

@@ -5,13 +5,13 @@ Lilium frontend
 ## Install the dependencies
 
 ```bash
-bun install
+pnpm install
 ```
 
 ### Install quasar cli
 
 ```bash
-sudo bun install -g @quasar/cli
+sudo npm install -g @quasar/cli
 ```
 
 ### Start the app in development mode (hot-code reloading, error reporting, etc.)
@@ -23,13 +23,13 @@ quasar dev
 ### Run unit tests
 
 ```bash
-bun run test:unit
+pnpm run test:unit
 ```
 
 ### Run e2e tests
 
 ```bash
-npm run test:e2e
+pnpm run test:e2e
 ```
 
 ### Build the app for production