v3.12.13
bpo-27425: Be more explicit in .gitattributes (GH-840)
bpo-36511: clean up python process before deploy on ARM Windows buildbots (GH-14431)
bpo-36511: Improve ARM32 buildbot scripts (GH-14251)
bpo-41173: Copy test results file from ARM worker before uploading (GH-21305)