Auto merge of #62564 - Mark-Simulacrum:azure-line-endings, r=pietroalbini

Ensure that checkout is with \n line endings

During installation of mingw, at least, the git directories change, so
we need to reset the core.autocrlf config to false.

Once we finish checking out submodules, check that the line endings are
\n and not \r\n.

Artifacts were built via the last try on #62545; I've manually confirmed that `install.sh` appears to no longer have `\r\n` line endings.

Fixes #62276.