Pin version as requested by dep

Author: ransbachm

global/certbot-dns-plugins.json

@@ -35,7 +35,7 @@
 		"name": "Cloudflare",
 		"package_name": "certbot-dns-cloudflare",
 		"version": "=={{certbot-version}}",
-		"dependencies": "cloudflare acme=={{certbot-version}}",
+		"dependencies": "cloudflare==2.19.* acme=={{certbot-version}}",
 		"credentials": "# Cloudflare API token\ndns_cloudflare_api_token = 0123456789abcdef0123456789abcdef01234567",
 		"full_plugin_name": "dns-cloudflare"
 	},