Bump Polyfill from 11.4.3 to 11.4.4

[dependabot]

Updated Polyfill from 11.4.3 to 11.4.4.

Release notes

Sourced from Polyfill's releases.

11.4.4

• #​618 Fix string.Join(char, ReadOnlySpan) stack overflow
• #​619 Fix swapped out parameters in Base64Url.DecodeFromUtf8
• #​620 Fix NullReferenceException in span Contains with null elements
• #​621 Polyfill ToHashSet on net47
• #​622 Check cancellation before opening the file in File async write polyfills
• #​623 Fix LeftJoin, RightJoin and FullJoin matching null keys
• #​624 Add missing ConfigureAwait(false) to polyfill awaits
• #​625 Fix NullReferenceException in span AnyExcept polyfills with null elements
• #​626 Create parent directories in ZipArchive.ExtractToDirectory overwrite polyfill
• #​627 Do not polyfill two-sequence Zip on netcoreapp3.0
• #​628 Fix HashSet.TryGetValue throwing for null with a StringComparer
• #​629 Accept padding and whitespace when decoding Base64Url
• #​630 Do not capture the SynchronizationContext in ConfigureAwait(ConfigureAwaitOptions)
• #​631 Fix span Sort: null elements, null comparer and pooled array references
• #​632 Match BCL parameter types for TimeSpan.FromDays/FromHours/FromMinutes
• #​633 Fix Enumerable.Sequence for NaN arguments and a zero step
• #​634 Throw FormatException from Base64.TryDecodeFromChars for invalid input
• #​635 Fix OperatingSystem.IsWindowsVersionAtLeast for an exact version match
• #​636 Fix CancelAsync hanging on a disposed source and hot-spinning
• #​637 Make ReadOnlySpan.StartsWith/EndsWith(string) ordinal
• #​638 Fix Random.Shared giving identical sequences on threads started together
• #​639 Fix Stream.ReadAsync(Memory) dropping data for non array-backed memory
• #​640 Return Task from TextWriter.WriteAsync/WriteLineAsync(ReadOnlyMemory)
• #​641 Reject non-ASCII chars in Base64.DecodeFromChars
• #​642 Fix Regex.EnumerateSplits ranges for capture groups, RightToLeft and empty matches
• #​643 Fix TcpClient.ConnectAsync cancellation surfacing NullReferenceException
• #​644 Fix TextReader.ReadAsync(Memory) dropping data for non array-backed memory
• #​645 Honour EnumerationOptions in Directory and DirectoryInfo polyfills
• #​646 Do not polyfill Int128/UInt128/nint/nuint BigMul on net10
• #​647 Fix Regex.EnumerateMatches(span, pattern, options) always throwing
• #​648 Make wrapping arithmetic unchecked
• #​649 Make Task.WhenEach observe cancellation while tasks are pending
• #​650 Do not polyfill File.OpenNullHandle on net11
• #​651 Fix DefaultInterpolatedStringHandler.Clear not clearing the caller's handler
• #​652 Wait for redirected output in Process.WaitForExitAsync polyfill
• #​653 Avoid unbounded stackalloc in RandomNumberGenerator.GetHexString
• #​654 Do not polyfill StringBuilder.MoveChunks on net11
• #​655 Make HashDataAsync, HmacDataAsync and VerifyHmacAsync asynchronous and cancellable
• #​656 Make Parallel.ForEachAsync pull lazily and stop on first failure
• #​657 Kill descendants in Process.Kill(entireProcessTree) polyfill
• #​658 Support 1 and 2 byte types in Interlocked.And and Or
• #​659 Kill the process when Process.Run and RunAndCaptureText time out
• #​660 Preserve ExceptionDispatchInfo.SetCurrentStackTrace across throw
• #​661 Fix AddMicroseconds losing precision for large values
• #​662 Fix string.Join object overloads when the first element is null
• #​663 Fix DateTime/DateTimeOffset TryParse polyfill guards
• #​664 Use a real rename for File.Move(overwrite) polyfill
• #​665 Keep Base64 polyfills when Microsoft.Bcl.Memory is referenced
• #​666 Fix Random.NextSingle being able to return 1.0
• #​667 Use the binder and IgnoreCase in the Type.GetMethod polyfill
  ... (truncated)

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