Use Pandas 1.3

src/requirements.txt

 pyqt5~=5.12
 pyqtgraph~=0.12 # Bug! Line #70 should be replaced by: bg = np.empty((int(self.params['width']), int(self.params['height']), 4), dtype=np.ubyte)
-pandas~=1.2
+pandas~=1.3
 configobj~=5.0
 sphinx~=1.3
 sphinx_rtd_theme~=0.4