I've just checked the requirements for openpyxl--there are transitive (optional?) dependencies on CPython native DLLs. Those can't be made to work in a JVM. You'll have to retool your scripts to use a java library for document manipulation. Apache POI is a popular choice, and happens to be part of Kymera's Office Document Module.
There are numerous discussions on this forum describing the use of Apache POI, including commentary on its use as an alternative to openpyxl.
There's also a report of partial success with an older version of openpyxl. Might want to try that: