fix: Memoize issue fix

[johnmcclean]

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The current implementation of Memoize.memoizeSupplierAsync creates caching function inside the supplier body which causes the caching function to get created on every Supplier.get() call.

Test Code:

    var supplier = Memoize.memoizeSupplierAsync(() -> {
      System.out.println(
          LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd hh:mm:ss")) + ": refresh");
      return System.nanoTime();
    }, Executors.newSingleThreadScheduledExecutor(), 1_000);

    new Thread(() -> {
      for (int i = 0 ; i < 5; i++) {
        var d = supplier.get();
      }
    }).start();

Output:

2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:47: refresh
2022-05-11 02:10:48: refresh
2022-05-11 02:10:48: refresh
2022-05-11 02:10:48: refresh
2022-05-11 02:10:48: refresh
2022-05-11 02:10:48: refresh

Current Implementation.

  public static <R> Function0<R> memoizeSupplierAsync(Supplier<R> fn, ScheduledExecutorService ex, long updateRateInMillis) {
    return () -> {
      return memoizeFunctionAsync((a) -> {
        return fn.get();
      }, ex, updateRateInMillis).apply("k");
    };
  }

Right Implementation

  public static <R> Function0<R> memoizeSupplierAsync(Supplier<R> fn, ScheduledExecutorService ex, long updateRateInMillis) {
    Function1<T, R> memoizeFn = memoizeFunctionAsync((a) -> {
        return fn.get();
      }, ex, updateRateInMillis);

    return () -> {
      return memoizeFn.apply("k");
    };
  }

Also upgrades to latest Jackson Databind.