Added 'twine' and 'python' as explicit environment dependencies

environment.yml

@@ -3,12 +3,14 @@ channels:
   - conda-forge
   - huggingface
 dependencies:
+  - python=3.9
   - transformers=4.28
   - python-build=0.10
   - pip=23.1
   - setuptools=67.7
   - pytest=7.3
   - pytest-cov=4
+  - twine=4
   - pip:
       - evaluate==0.4
       - datasets==2.12