[newlib-cygwin/cygwin-3_3-branch] Cygwin: Update CI configuration for python version change

[Jon TURNEY]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=14acfbd42ad0884a6f47ff48024399e7cce9e41a

commit 14acfbd42ad0884a6f47ff48024399e7cce9e41a
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Thu Dec 30 00:33:28 2021 +0000

    Cygwin: Update CI configuration for python version change
    
    Update the python version for python-lxml and python-ply packages.
    
    'dblate' now depends on python39, so that will be installed and made the
    default by alternatives, so make sure that these python packages are
    also available for that python version.
    
    (cherry picked from commit 54b6c0e81f05ab2f047df64716f3fa2da3e7e2b1)

Diff:
---
 .appveyor.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.appveyor.yml b/.appveyor.yml
index 698366702..8c03a3f72 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -52,8 +52,8 @@ texlive-collection-latexrecommended,\
 texlive-collection-fontsrecommended,\
 texlive-collection-pictures,\
 xmlto,\
-python38-lxml,\
-python38-ply"
+python39-lxml,\
+python39-ply"
 
 build_script: >-
     %CYGWIN_ROOT%/bin/bash -lc "