Update environments.yml

environments/fidle-cpu.yml

@@ -4,6 +4,7 @@ channels:
 dependencies:
   - numpy=1.19
   - tensorflow>=2.4
+  - python>=3.8
   - keras
   - scikit-learn
   - scikit-image

environments/fidle-gpu.yml

@@ -4,6 +4,7 @@ channels:
 dependencies:
   - numpy=1.19
   - tensorflow-gpu>=2.4
+  - python>=3.8
   - keras
   - scikit-learn
   - scikit-image