logilab-common #8267966 testlib.with_tempdir is not thread-safe [validation pending]

which potentially leads to a bad value left in tempfile.tempdir which make normal tempfile usages crash unexpectedly.

prioritynormal
typebug
done in1.3.0
load left0.000
closed by#a46185f35ce7 [testlib] Deprecate with_tempdir (Closes #8267966)
patch[testlib] Deprecate with_tempdir (Closes #8267966) [applied]