v2.48.0

Changed:

• 🔥 ocrd.run_processor / ocrd.processor.get_processor: rm unnecessary ocrd_tool kwarg #998, #1009
• chdir into workspace directory for both cached and uncached get_processor, #972, 987
• 🔥 new CUDA base image 20.04, support CUDA runtime 11/12, not 10, #1014

Fixed:

• make install: do not update opencv-python-headless or numpy for python <= 3.6, #1014