Updated xgboost version in tox.ini file

Author: djm21

tox.ini

@@ -52,7 +52,7 @@ deps =
     tests: cython               # required to install pandas from source
     tests: swat >= 1.8
     tests: kerberos ; platform_system != "Windows" and platform_system != "Darwin"
-    tests: xgboost == 0.82
+    tests: xgboost == 1.7.3
     tests: urllib3 < 2.0.0
     tests: nbconvert
     tests: nbformat