changeset for fastify websocket context extra rename

.changeset/big-camels-tap.md

@@ -0,0 +1,54 @@
+---
+'graphql-ws': major
+---
+
+@fastify/websocket WebSocket in the context extra has been renamed from `connection` to `socket`
+
+### Migrating from v5 to v6
+
+```diff
+import { makeHandler } from 'graphql-ws/use/@fastify/websocket';
+
+makeHandler({
+  schema(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  context(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onConnect(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onDisconnect(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onClose(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onSubscribe(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onOperation(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onError(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onNext(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+  onComplete(ctx) {
+-   const websocket = ctx.connection;
++   const websocket = ctx.socket;
+  },
+});
+```