update transforms.py (#1287)

changed `random.randint` to `random.uniform` in `RandomGamma` to solve issue #1286 in Albumentations

Co-authored-by: Vladimir Iglovikov <ternaus@users.noreply.github.com>

albumentations/augmentations/transforms.py

@@ -1389,7 +1389,7 @@ def apply(self, img, gamma=1, **params):
         return F.gamma_transform(img, gamma=gamma)
 
     def get_params(self):
-        return {"gamma": random.randint(self.gamma_limit[0], self.gamma_limit[1]) / 100.0}
+        return {"gamma": random.uniform(self.gamma_limit[0], self.gamma_limit[1]) / 100.0}
 
     def get_transform_init_args_names(self):
         return ("gamma_limit", "eps")