Flora nginx security (#766)

Co-authored-by: Jonas Wende <jonas.wende@tum.de>

Author: wjon-tum

deployment/flora.nginx

@@ -8,6 +8,8 @@ server {
     listen xxxx:443 ssl http2;
     server_name xxxx;
 
+    server_tokens off;
+
     ssl_certificate /etc/letsencrypt/live/xxxx/fullchain.pem;
     ssl_certificate_key /etc/letsencrypt/live/xxxx/privkey.pem;
 
@@ -77,6 +79,8 @@ server {
     listen api.xxxx:443 ssl http2;
     server_name api.xxxx;
 
+    server_tokens off;
+
     ssl_certificate /etc/letsencrypt/live/api.xxxx/fullchain.pem;
     ssl_certificate_key /etc/letsencrypt/live/api.xxxx/privkey.pem;