[INTERNAL] Update emojis regarding v4 release

Author: flovogt

README.md

@@ -8,7 +8,7 @@
 [![OpenUI5 Community Slack (#tooling channel)](https://img.shields.io/badge/slack-join-44cc11.svg)](https://ui5-slack-invite.cfapps.eu10.hana.ondemand.com)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](CODE_OF_CONDUCT.md)
 
-> [UI5 Tooling v4](https://sap.github.io/ui5-tooling/v4) is in development and next version 🛠️
+> [UI5 Tooling v4](https://sap.github.io/ui5-tooling/v4) is in development and next version 🚧
 >
 > [UI5 Tooling v3](https://sap.github.io/ui5-tooling/v3) is the latest and stable version 🎉
 >

docs/updates/migrate-v4.md

@@ -1,7 +1,7 @@
 # Migrate to v4
 
 !!! tip "In Development"
-	**UI5 Tooling V4 is still in development 🎉**
+	**UI5 Tooling V4 is still in development 🚧**
 
 	Please use UI5 Tooling V3 by installing the latest version via: `npm i --save-dev @ui5/cli@latest`