I can help you find one but realize that that does not really solve your problem - UNLESS you are the ONLY ONE using that spreadsheet and the ONLY ONE printing it. Anyone else, not having the font installed will still see and print the original lower case letters as lowercase letters.
Why not do it the proper way?
Export your spreadsheet as a comma delimited txt file.
Open that txt file in Word.
In Word select all and choose Format>Change Case>UPPERCASE.
Save the file as a txt file.
In your spreadsheet program choose File>Open. Select Text file.
Choose Delimited >next >choose comma (only comma) >Finish.
All you may have to do is readjust the column with, save as spreadsheet file and Bob's your uncle.
Have fun and ... be nice to the cats
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Relax ... it is just a font