[PATH] fix #4810

[sliptonic]

use subprocess.Popen() to avoid executing arbitrary code

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[luzpaz]

@sliptonic is it mentioned anywhere in the docs that asciidoctor is a recommended dependency for Path WB?

[freecadci]

for feature branch PR_5306. Pipeline 439265238 was triggered at debec19. All CI branches and pipelines.

[sliptonic]

@sliptonic is it mentioned anywhere in the docs that asciidoctor is a recommended dependency for Path WB?

https://wiki.freecadweb.org/Path_Sanity#Note_an_ASCIIDOC_and_Asciidoctor

[freecadci]

for feature branch PR_5306. Pipeline 439824097 was triggered at a65dbc6. All CI branches and pipelines.