devel/py-simpleeval: Update to version 0.9.1

Changelog:

• Fix GH issue #13: Expression does not give expected result
• Fix GH issue #15: Including non-builtin class in names allows end user to snoop
• Fix GH issue #16: Multiple comparisons being short-circuited

Approved by: AMDmi3 (mentor)
Differential Revision: https://reviews.freebsd.org/D8493