DEPS: require modern openpyxl #15184
Description
we currently support as old as 1.6.1
we should bump this to 2.3 (released mid-2015).
then can remove the compat for openpyxl < 2 code and fully support styles.
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we currently support as old as 1.6.1
we should bump this to 2.3 (released mid-2015).
then can remove the compat for openpyxl < 2 code and fully support styles.