chore: update socket.io to latest version (#182)

(cherry picked from commit 0cb4e29)

package.json

@@ -34,7 +34,7 @@
     "passport": "^0.3.2",
     "passport-local": "^1.0.0",
     "randomstring": "^1.1.5",
-    "socket.io": "^2.0.3",
+    "socket.io": "^2.0.4",
     "socketio-jwt": "^4.5.0",
     "timezones.json": "^1.2.0",
     "web-push": "^3.2.2",

yarn.lock

@@ -4545,7 +4545,7 @@ object-assign@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-3.0.0.tgz#9bedd5ca0897949bca47e7ff408062d549f587f2"
 
-object-assign@^4, object-assign@^4.0.0, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@~4.1.1:
+object-assign@^4, object-assign@^4.0.0, object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -5664,9 +5664,9 @@ [email protected]:
     socket.io-parser "2.3.1"
     to-array "0.1.4"
 
-socket.io-client@~2.0.2:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.0.3.tgz#6caf4aff9f85b19fd91b6ce13d69adb564f8873b"
+[email protected].4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.0.4.tgz#0918a552406dc5e540b380dcd97afc4a64332f8e"
   dependencies:
     backo2 "1.0.2"
     base64-arraybuffer "0.1.5"
@@ -5712,15 +5712,14 @@ [email protected]:
     socket.io-client "1.7.3"
     socket.io-parser "2.3.1"
 
-socket.io@^2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.0.3.tgz#4359f06a24933ae6bd087798af78c680eae345e3"
+socket.io@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.0.4.tgz#c1a4590ceff87ecf13c72652f046f716b29e6014"
   dependencies:
     debug "~2.6.6"
     engine.io "~3.1.0"
-    object-assign "~4.1.1"
     socket.io-adapter "~1.1.0"
-    socket.io-client "~2.0.2"
+    socket.io-client "2.0.4"
     socket.io-parser "~3.1.1"
 
 socketio-jwt@^4.5.0: