ext-gnupg is optional/suggested

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

composer.json

@@ -46,7 +46,6 @@
 		"ext-fileinfo": "*",
 		"ext-gmp": "*",
 		"ext-gd": "*",
-		"ext-gnupg": "*",
 		"phpmailer/phpmailer": "~6.0",
 		"monolog/monolog": "^1.24",
 		"robthree/twofactorauth": "^1.6",
@@ -73,6 +72,7 @@
 	"suggest": {
 		"ext-bcmath": "*",
 		"ext-zip": "*",
+		"ext-gnupg": "*",
 		"ext-apcu": "*",
 		"ext-readline": "*"
 	},

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d816217447c19befb9f4757a53a7b40e",
+    "content-hash": "284870bbdee7d9133054271d2fd4cf92",
     "packages": [
         {
             "name": "amnuts/opcache-gui",
@@ -4960,8 +4960,7 @@
         "ext-openssl": "*",
         "ext-fileinfo": "*",
         "ext-gmp": "*",
-        "ext-gd": "*",
-        "ext-gnupg": "*"
+        "ext-gd": "*"
     },
     "platform-dev": {
         "ext-pcntl": "*"