Update Vuex package to v3.5.1

New hasModule method was added in v3.2.0. This new feature is needed
with env specific work being done for the two image firmware update
work.

Signed-off-by: Yoshie Muranaka <[email protected]>
Change-Id: Ia2a9168f76eb36a586913bd6371533eea0981b1c

Author: yoshiemuranaka

package-lock.json

@@ -28,7 +28,7 @@
     "vue-i18n": "8.15.3",
     "vue-router": "3.1.3",
     "vuelidate": "0.7.5",
-    "vuex": "3.0.1",
+    "vuex": "3.5.1",
     "xterm": "4.6.0",
     "xterm-addon-attach": "0.6.0",
     "xterm-addon-fit": "0.4.0"