Update poetry tests folder (#132)

* Update poetry tests folder

* Don't keep old caches

* Revert to cache v7

* Use v8 cache

Author: marboledacci

.circleci/test-deploy.yml

@@ -8,7 +8,7 @@ filters: &filters
 parameters:
   cache-version:
     type: string
-    default: v7
+    default: v8
 
 executors:
   macos: