Update inwx dns plugin

Update the certbot-inwx-dns plugin from version 2.1.2 to 3.0.2.
The new version only relying on the `account.login` and `nameserver.*` methods of the INWX API, thus allowing a constraint of the used API account to only the 'DNS management' role.

Author: Astronach

global/certbot-dns-plugins.json

@@ -322,9 +322,9 @@
 	"inwx": {
 		"name": "INWX",
 		"package_name": "certbot-dns-inwx",
-		"version": "~=2.1.2",
-		"dependencies": "",
-		"credentials": "dns_inwx_url = https://api.domrobot.com/xmlrpc/\ndns_inwx_username = your_username\ndns_inwx_password = your_password\ndns_inwx_shared_secret = your_shared_secret optional",
+		"version": "~=3.0.3",
+		"dependencies": "inwx-domrobot>=3.2.0",
+		"credentials": "dns_inwx_url = https://api.domrobot.com/\ndns_inwx_username = your_username\ndns_inwx_password = your_password\ndns_inwx_shared_secret = your_shared_secret optional",
 		"full_plugin_name": "dns-inwx"
 	},
 	"ionos": {