[arrow] branch master updated: MINOR: [CI] Fix mamba on AppVeyor

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apitrou pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
     new f3af2b7d9b MINOR: [CI] Fix mamba on AppVeyor
f3af2b7d9b is described below

commit f3af2b7d9bdcd05244020c9ff5097cdd3a8b2fa6
Author: Antoine Pitrou <an...@python.org>
AuthorDate: Mon May 30 14:35:54 2022 +0200

    MINOR: [CI] Fix mamba on AppVeyor
    
    Due to https://github.com/mamba-org/mamba/issues/1706, we must make sure we upgrade to the latest mamba version on AppVeyor.
    
    Closes #13263 from pitrou/minor-appveyor-mamba
    
    Authored-by: Antoine Pitrou <an...@python.org>
    Signed-off-by: Antoine Pitrou <an...@python.org>
---
 ci/appveyor-cpp-setup.bat | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ci/appveyor-cpp-setup.bat b/ci/appveyor-cpp-setup.bat
index af3456c452..358a3e8c1e 100644
--- a/ci/appveyor-cpp-setup.bat
+++ b/ci/appveyor-cpp-setup.bat
@@ -46,10 +46,10 @@ conda info -a
 @rem
 @rem Install mamba to the base environment
 @rem
-conda install -q -y -c conda-forge mamba || exit /B
+conda install -q -y -c conda-forge mamba python=3.9 || exit /B
 
 @rem Update for newer CA certificates
-mamba update -q -y --all || exit /B
+mamba update -q -y -c conda-forge --all || exit /B
 
 @rem
 @rem Create conda environment for Build and Toolchain jobs