* parse_env_file discard utf8 bom
* powershell 5 may add the BOM even when explicitly using utf8
* add test + apply to GITHUB_PATH as well
* fix it
* fix powershel 5 syntax
* misc
* fixup
* fix wrong subaction
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Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
