Update changesets

Author: jerelmiller

.changeset/early-seals-drum.md

@@ -2,4 +2,15 @@
 "@apollo/client": major
 ---
 
-The `MaybeMasked` type exported from `@apollo/client/masking` is no longer overridable with HKT. Instead `MaybeMasked` is aliased to a new overridable `Mask` type which is expected to return the masked type wehn available.
+Update the HKT types used by the `MaybeMasked` and `Unmasked` types. `MaybeMasked` now uses the `Mask` HKT type and `Unmasked` uses the `Unmask` HKT type.
+
+```diff
+declare module "@apollo/client" {
+  interface TypeOverrides {
+-   MaybeMasked: CustomMaybeMaskedHKT
++   Mask: CustomMaybeMaskedHKT
+-   Unmasked: CustomUnmaskedHKT
++   Unmask: CustomUnmaskedHKT
+  }
+}
+```