fix(ses): fix ThirdPartyStaticModuleInterface type

The `proxiedExports` param to the `execute` function cannot be `Object`, which is the literal `Object`.  It must be _some_ kind of `Object`, however, and `Record<PropertyKey, any>` is about as loose as I could think of.

packages/ses/types.d.ts

@@ -59,7 +59,7 @@ export interface ThirdPartyStaticModuleInterface {
   imports: Array<string>;
   exports: Array<string>;
   execute(
-    proxiedExports: Object,
+    proxiedExports: Record<PropertyKey, any>,
     compartment: Compartment,
     resolvedImports: Record<string, string>,
   ): void;