Update dependencies in test folder

Author: BenediktSeidl

DEVELOPMENT.md

@@ -40,6 +40,8 @@ npx @grafana/create-plugin@latest update
 yarn install
 yarn upgrade
 yarn pretty
+cd tests
+yarn upgrade
 ```
 
 ## Release
@@ -111,4 +113,4 @@ Docker (compose) reuses already downloaded images as much as it can. So in order
 you need to remove the current image you have. The following snipped does a clean sweep.
 ```BASH
 docker compose down --rmi all
-```
+```

tests/package.json

@@ -8,7 +8,7 @@
   },
   "author": "",
   "license": "GPL-2.0-only",
-  "dependencies": {
+  "devDependencies": {
     "cypress": "^12.11.0"
   }
 }