packaging: update dulwich to drop the certifi dependency on Windows The presence of `certifi` causes the system certificate store to be ignored, which was reported as a bug against TortoiseHg[1]. It was only pulled in on Windows because of `dulwich`, which was copied from the old TortoiseHg install scripts, in order to support `hg-git`. This version of `dulwich` raises the minimum `urllib3` to a version (1.25) that does certificate verification by default, without the help of `certifi`[2]. We already bundle a newer version of `urllib3`. Note that `certifi` can still be imported from the user site directory, if installed there. But the installer no longer disables the system certificates by default. [1] https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/5825 [2] https://github.com/jelmer/dulwich/issues/1025

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#!/usr/bin/env python3

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# Filters traceback lines from stdin.

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import io

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import sys

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if sys.version_info[0] >= 3:

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    # Prevent \r from being inserted on Windows.

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    sys.stdout = io.TextIOWrapper(

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        sys.stdout.buffer,

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        sys.stdout.encoding,

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        sys.stdout.errors,

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        newline="\n",

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        line_buffering=sys.stdout.line_buffering,

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    )

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state = 'none'

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for line in sys.stdin:

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    if state == 'none':

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        if line.startswith('Traceback '):

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            state = 'tb'

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    elif state == 'tb':

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        if line.startswith('  File '):

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            state = 'file'

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            continue

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        elif not line.startswith(' '):

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            state = 'none'

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    elif state == 'file':

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        # Ignore lines after "  File "

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        state = 'tb'

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        continue

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    print(line, end='')