Updates from 77th meeting of TC39

To Stage-1:

• await operations to stage 1.

• ResizableArrayBuffer and GrowableSharedArrayBuffer to stage 1.

To Stage-2:

• JSON.parse source text access to stage 2.

• Record & Tuple to stage 2.

• .item on method on all the built-in indexables to stage 2.

• The FinalizationRegistry.prototype.cleanupSome method to stage 2.

• JSON Modules split out from Import Conditions at stage 2.

To Stage-3:

• Intl.Segmenter: Unicode segmentation to stage 3.

To Stage-4:

• Numeric Separators to stage 4.

• Logical Assignment to stage 4.

• WeakRefs to stage 4.

• Intl.DateTimeFormat dateStyle & timeStyle to stage 4.

• Intl.ListFormat to stage 4.

• Promise.any and AggregateError to stage 4.

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@gnumanth