pin elasticsearch>=7.0.0,7.14.0 (#48)

Author: DustinKLo

setup.py

@@ -16,7 +16,7 @@
         # https://github.com/celery/celery/issues/6768
         'click>=7.0,<8.0',
         'flask-restx>=0.4.0',
-        'elasticsearch>=7.0.0,<8.0.0',
+        'elasticsearch>=7.0.0,<7.14.0',
         'shapely>=1.5.15',
         'Cython>=0.15.1',
         'Cartopy>=0.13.1',