[Notifier] Add RingCentral bridge

.github/versions.json

@@ -1031,6 +1031,9 @@
             "6.2",
             "6.3"
         ],
+        "symfony/ring-central-notifier": [
+            "6.3"
+        ],
         "symfony/rocket-chat-notifier": [
             "5.1",
             "5.2",

symfony/ring-central-notifier/6.3/manifest.json

@@ -0,0 +1,5 @@
+{
+    "env": {
+        "#1": "RINGCENTRAL_DSN=ringcentral://API_TOKEN@default?from=FROM"
+    }
+}