Remove python 3.7 support

Remove python 3.7 support

conda.recipe/meta.yaml

 package:
   name: data2passcal
-  version: 2022.1.0.0
+  version: 2023.2.0.0
 
 source:
   path: ../
@@ -11,10 +11,10 @@ build:
 
 requirements:
   build:
-    - python >=2.7
+    - python >=3.8
     - pip
   run:
-    - python >=2.7
+    - python >=3.8
 
 test:
   requires: