adjust CSP for staging (npm run serve)

Author: overheadhunter

config/_default/hugo.yaml

@@ -84,7 +84,7 @@ server:
           script-src 'self' 'unsafe-eval' https://umami.skymatic.de/ https://community.cryptomator.org/ https://js.stripe.com/ https://*.paddle.com/;
           style-src 'self' 'unsafe-inline' https://*.paddle.com/;
           img-src 'self' data: https://static.cryptomator.org/ https://*.paddle.com/ https://paddle.s3.amazonaws.com/ https://avatars.githubusercontent.com/;
-          connect-src 'self' https://api.cryptomator.org/ https://store.cryptomator.org/ https://umami.skymatic.de/ https://*.paddle.com/ http://localhost/ http://localhost:8787/ http://localhost:3300/ http://localhost:8080/;
+          connect-src 'self' https://api.cryptomator.org/ https://api-staging.cryptomator.org/ https://store.cryptomator.org/ https://umami.skymatic.de/ https://*.paddle.com/ http://localhost/ http://localhost:8787/ http://localhost:3300/ http://localhost:8080/;
           font-src 'self';
           media-src https://static.cryptomator.org/;
           frame-src https://community.cryptomator.org/ https://js.stripe.com/ https://*.paddle.com/;