refactor(overmind-vue): refactor tests to new api

Author: christianalfoni

packages/node_modules/overmind-vue/src/Index.test.ts

@@ -24,7 +24,7 @@ describe('Vue', () => {
         foo: 'bar',
       },
       actions: {
-        changeFoo: (action) => action().mutate((state) => (state.foo = 'bar2')),
+        changeFoo: (action) => action.mutate((state) => (state.foo = 'bar2')),
       },
     })
 
@@ -48,7 +48,7 @@ describe('Vue', () => {
         foo: 'bar',
       },
       actions: {
-        changeFoo: (action) => action().mutate((state) => (state.foo = 'bar2')),
+        changeFoo: (action) => action.mutate((state) => (state.foo = 'bar2')),
       },
     })