Relax arrow version in dev env (NVIDIA#11418)

Arrow version pinnings were relaxed in this commit: rapidsai/cudf@d740c3c, this PR performs the same change in dev env.

Authors:
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - AJ Schmidt (https://github.com/ajschmidt8)

URL: rapidsai/cudf#11418

conda/environments/cudf_dev_cuda11.5.yml

@@ -21,7 +21,7 @@ dependencies:
   - numba>=0.54
   - numpy
   - pandas>=1.0,<1.5.0dev0
-  - pyarrow=8.0.0
+  - pyarrow=8
   - fastavro>=0.22.9
   - python-snappy>=0.6.0
   - notebook>=0.5.0
@@ -51,7 +51,7 @@ dependencies:
   - dask>=2022.05.2
   - distributed>=2022.05.2
   - streamz
-  - arrow-cpp=8.0.0
+  - arrow-cpp=8
   - dlpack>=0.5,<0.6.0a0
   - double-conversion
   - rapidjson