tree,remote: use >=3.14.5 for WebDAV dependency webdavclient3

Context: iterative#4256 (comment)

Refs iterative#1153

setup.py

@@ -93,7 +93,7 @@ def run(self):
 oss = ["oss2==2.6.1"]
 ssh = ["paramiko>=2.5.0"]
 hdfs = ["pyarrow>=0.17.0"]
-webdav = ["webdavclient3==3.14.5"]
+webdav = ["webdavclient3>=3.14.5"]
 # gssapi should not be included in all_remotes, because it doesn't have wheels
 # for linux and mac, so it will fail to compile if user doesn't have all the
 # requirements, including kerberos itself. Once all the wheels are available,