fix: make static-assets with Yarn 4

Author: mdeliatf

Makefile

@@ -15,6 +15,6 @@ clean:
 static-assets: build
 	cp build/static/js/*.js static-assets/main-v1.js
 	sed -i '1s@.*@\/* eslint-disable *\/@' static-assets/main-v1.js
-	sed -i '3s@.*@\/\/# sourceMappingURL=https:\/\/traefik.github.io\/traefiklabs-hub-button-app\/main-v1.js.map@' static-assets/main-v1.js
+	sed -i '23s@.*@\/\/# sourceMappingURL=https:\/\/traefik.github.io\/traefiklabs-hub-button-app\/main-v1.js.map@' static-assets/main-v1.js
 	cp build/static/js/*.js.map static-assets/main-v1.js.map
 	sed -i -E '1s@static\/js\/main.[0-9a-zA-Z]{8}.js@https:\/\/traefik.github.io\/traefiklabs-hub-button-app\/main-v1.js@' static-assets/main-v1.js.map