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

     1

  $ hg init

     2

  $ echo This is file a1 > a

     3

  $ hg add a

     4

  $ hg commit -m "commit #0"

     5

  $ ls -A

     6

  .hg

     7

  a

     8

  $ echo This is file b1 > b

     9

  $ hg add b

    10

  $ hg commit -m "commit #1"

    11

  $ hg co 0

    12

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

    13

    14

B should disappear

    15

    16

  $ ls -A

    17

  .hg

    18

  a