RegExp property escapes: list emoji data version (UTR51) (#981)

test/built-ins/RegExp/property-escapes/ASCII.js

test/built-ins/RegExp/property-escapes/ASCII_Hex_Digit.js

test/built-ins/RegExp/property-escapes/Alphabetic.js

test/built-ins/RegExp/property-escapes/Any.js

test/built-ins/RegExp/property-escapes/Assigned.js

test/built-ins/RegExp/property-escapes/Bidi_Control.js

test/built-ins/RegExp/property-escapes/Bidi_Mirrored.js

test/built-ins/RegExp/property-escapes/Case_Ignorable.js

test/built-ins/RegExp/property-escapes/Cased.js

...lt-ins/RegExp/property-escapes/Changes_When_Casefolded.js

...lt-ins/RegExp/property-escapes/Changes_When_Casemapped.js

...lt-ins/RegExp/property-escapes/Changes_When_Lowercased.js

...s/RegExp/property-escapes/Changes_When_NFKC_Casefolded.js

...lt-ins/RegExp/property-escapes/Changes_When_Titlecased.js

...lt-ins/RegExp/property-escapes/Changes_When_Uppercased.js

test/built-ins/RegExp/property-escapes/Dash.js

...s/RegExp/property-escapes/Default_Ignorable_Code_Point.js

test/built-ins/RegExp/property-escapes/Deprecated.js

test/built-ins/RegExp/property-escapes/Diacritic.js

test/built-ins/RegExp/property-escapes/Emoji.js