fix: let tests compatible to newer versions of pycifrw

[ycexiao]

What problem does this PR address?

Fix the failed tests as mentioned in #144

The newest version of pycifrw in conda-forge is 4.4.6, and in PyPI is 5.0.1. Some StarError is changed to YappsSyntaxError in the newer version of pycifrw and can not be caught by the parser in diffpy.structure. This is why tests failed in diffpy.structure=3.3.1rc0.

What should the reviewer(s) do?

Please check if catching the YappsSyntaxError as StructureFormatError is what we want.

[ycexiao]

@bobleesj, it's ready for review.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.93%. Comparing base (9379e80) to head (b910f87).
Report is 3 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #146 +/- ## ======================================= Coverage 98.93% 98.93% ======================================= Files 13 13 Lines 1878 1878 ======================================= Hits 1858 1858 Misses 20 20 

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[sbillinge]

ah, its all resolved! Great work @ycexiao !!!! Please ignore all my other comments, this was done very well!