fix ansys version (#679)

* fix ansys version

* Update ci.yml

Author: cbellot000

ansys/dpf/core/_version.py

@@ -22,4 +22,5 @@
     "4.0": "2022R2",
     "5.0": "2023R1",
     "6.0": "2023R2",
+    "6.1": "2023R2",
 }