docs(changeset): GrafastExecutionArgs now accepts resolvedPreset …

…and `requestContext`

directly; passing these through additional arguments is now deprecated.

`plugin.grafast.hooks.args` is now `plugin.grafast.middleware.prepareArgs`, and
the signature has changed - you must be sure to call the `next()` function and
ctx/resolvedPreset can be extracted directly from `args`:

```diff
 const plugin = {
   grafast: {
-    hooks: {
+    middleware: {
-      args({ args, ctx, resolvedPreset }) {
+      prepareArgs(next, { args }) {
+        const { requestContext: ctx, resolvedPreset } = args;
         // ...
+        return next();
       }
     }
   }
 }
```

.changeset/smooth-bats-double.md

@@ -0,0 +1,31 @@
+---
+"graphile-build": patch
+"postgraphile": patch
+"graphile-config": patch
+"@dataplan/pg": patch
+"grafserv": patch
+"grafast": patch
+---
+
+`GrafastExecutionArgs` now accepts `resolvedPreset` and `requestContext`
+directly; passing these through additional arguments is now deprecated.
+
+`plugin.grafast.hooks.args` is now `plugin.grafast.middleware.prepareArgs`, and
+the signature has changed - you must be sure to call the `next()` function and
+ctx/resolvedPreset can be extracted directly from `args`:
+
+```diff
+ const plugin = {
+   grafast: {
+-    hooks: {
++    middleware: {
+-      args({ args, ctx, resolvedPreset }) {
++      prepareArgs(next, { args }) {
++        const { requestContext: ctx, resolvedPreset } = args;
+         // ...
++        return next();
+       }
+     }
+   }
+ }
+```