chore(manifest): bump version to 0.5.5-beta.4

Author: Csontikka

custom_components/mikrotik_extended/manifest.json

@@ -14,5 +14,5 @@
         "librouteros>=3.4.1,<4.0.0",
         "mac-vendor-lookup>=0.1.12,<0.2.0"
     ],
-    "version": "0.5.5-beta.3"
+    "version": "0.5.5-beta.4"
 }