Fixed GetRangeAsync not having correct optional parameters (#1201)

Hello,
according to the
[docs](https://create.roblox.com/docs/reference/engine/classes/MemoryStoreSortedMap#GetRangeAsync),
the `GetRangeAsync` should have `exclusiveLowerBound` and
`exclusiveUpperBound` as optional parametrs, while currently that's not
the case.

![image](https://github.com/roblox-ts/types/assets/40070133/8bcc7625-76ed-46b2-a726-aeb0bfd805c3)



![image](https://github.com/roblox-ts/types/assets/40070133/d061ee54-1faf-4b04-a2b6-b6c86f4ca513)

---------

Co-authored-by: Dion <[email protected]>

include/customDefinitions.d.ts

@@ -645,6 +645,14 @@ interface MemoryStoreSortedMap extends Instance {
 		expiration: number,
 		sortKey?: string | number,
 	): boolean;
+	GetRangeAsync(
+		this: MemoryStoreSortedMap,
+		direction: CastsToEnum<Enum.SortDirection>,
+		count: number,
+		exclusiveLowerBound?: { key?: string; sortKey?: string | number },
+		exclusiveUpperBound?: { key?: string; sortKey?: string | number },
+	): Array<{ key: string; value: unknown; sortKey?: string | number }>;
+	GetAsync(this: MemoryStoreSortedMap, key: string): LuaTuple<[key?: string, sortKey?: string | number]>;
 }
 
 /** @server */