ci-cygwin*.yml: Fix packaging up of SAGE_LOCAL/var/tmp/sage/build/* #31211
Description
These files are intended to be put in the logs artifact, but the code is being run with the wrong shell, so it fails silently:
https://github.com/kliem/sage/runs/1626910566
0s
Run mkdir -p "artifacts/$LOGS_ARTIFACT_NAME"; for a in "/opt/sage-255cf51a4f41b054d32a39562102877b0b18969f"/var/tmp/sage/build/*; do if [ -d "$a" ]; then tar -c --remove-files -f "artifacts/$LOGS_ARTIFACT_NAME/$(basename "$a").tar" "$a"; fi; done; cp -r logs/* "artifacts/$LOGS_ARTIFACT_NAME"
mkdir -p "artifacts/$LOGS_ARTIFACT_NAME"; for a in "/opt/sage-255cf51a4f41b054d32a39562102877b0b18969f"/var/tmp/sage/build/*; do if [ -d "$a" ]; then tar -c --remove-files -f "artifacts/$LOGS_ARTIFACT_NAME/$(basename "$a").tar" "$a"; fi; done; cp -r logs/* "artifacts/$LOGS_ARTIFACT_NAME"
shell: C:\Program Files\Git\bin\bash.EXE --noprofile --norc -e -o pipefail {0}
(the correct shell to use for running tar is the cygwin shell.)
Depends on #33791
Component: porting
Reviewer: Kwankyu Lee
Issue created by migration from https://trac.sagemath.org/ticket/31211