Zip bombs wouldn’t apply here, from what I understand to create those you’d have to start with uncompressed data. The typical example is using a bunch of zeroes as the starting point, not only is that compressible but the compression algorithm will look for redundancies in the data to increase the compression efficiency (a bunch of zeroes would have tons of redundancy).

Stackoverflow has a good discussion on it https://stackoverflow.com/questions/1459673/how-does-one-make-a-zip-bomb