bpo-44334: Use bytearray in urllib.unquote_to_bytes

[mostafadafatersa]

In case of form contain very large data ( in my case the string to parse was about 6000000 byte )
Old code use list of bytes during parsing consumes a lot of memory
New code will use bytearry , which use less memory

https://bugs.python.org/issue44334

[the-knights-who-say-ni]

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[terryjreedy]

Before doing anything more, sign the CLA. Merging into 3.9 is not valid and is likely the reason for the spurious review requests. Make a new PR in which you create a branch from main and then compare and propose to merge it into main. Read devguide.python.org, which should make this clear.

EDIT: Changing the base branch from 3.9 to main should have worked right if your patch-1 branch were a branch of main, but since it did not, it was perhaps a branch of 3.9 or something other than what it needed to be. Since the changes are few, start over with a fresh branch derived from main.