chore: enable test caching for all projects

Author: empeje

nx.json

@@ -40,6 +40,9 @@
     "lint": {
       "inputs": ["default", "^default"],
       "cache": true
+    },
+    "test": {
+      "cache": true
     }
   }
 }

packages/ruby-exercise/project.json

@@ -9,7 +9,8 @@
       "options": {
         "command": "ruby -Ilib:test test/**/*_test.rb",
         "cwd": "packages/ruby-exercise"
-      }
+      },
+      "cache": true
     },
     "run": {
       "executor": "nx:run-commands",