Replace setup.py

Reference article noted by `SetuptoolsDeprecationWarning` from Action
log.

References:
* https://blog.ganssle.io/articles/2021/10/setup-py-deprecated.html#summary

Signed-off-by: Alex Nelson <[email protected]>

Author: ajnelson-nist

.github/workflows/cicd.yml

@@ -40,8 +40,7 @@ jobs:
     # the CASE outputs
     - name: Build CASE
       run: |
-        pip install setuptools
-        python setup.py install
+        pip install .
         mkdir -p ./output/
         case_from_dict ./output/dict-case.json
         case_from_rdf ./output/rdf-case.json