fix(deps): pin dependency socket.io to 2.5.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

yarn.lock

@@ -1295,7 +1295,7 @@ __metadata:
     select2: 3.5.2-browserify
     sequelize: 5.22.5
     shortid: 2.2.16
-    socket.io: ^2.1.1
+    socket.io: 2.5.0
     socket.io-client: 2.5.0
     spin.js: 4.1.1
     sqlite3: 5.1.6
@@ -14088,7 +14088,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"socket.io@npm:^2.1.1":
+"socket.io@npm:2.5.0":
   version: 2.5.0
   resolution: "socket.io@npm:2.5.0"
   dependencies: