Add pyqtdarktheme library to list of dependencies in conda recipe

conda-recipe/meta.yaml

@@ -21,11 +21,9 @@ requirements:
   run:
     - python >=3.9
     - obspy >=1.3.0
-    # needs basemap or cartopy. Cartopy has heavy deps like hdf4 and 5, so basemap for now.
-    # err, basemap is getting more depricated, try cartopy
     - cartopy
-    # - basemap
     - pyside6
+    - pyqtdarktheme
 
 # test:
 #   imports: