fix go mod version

songzhibin97 · songzhibin97 · commit b9b4bc6b8b7a · 2021-08-21T11:05:25.000+08:00
diff --git a/server/go.mod b/server/go.mod
@@ -1,6 +1,6 @@
 module github.com/flipped-aurora/gin-vue-admin
 
-go 1.14
+go 1.15
 
 require (
 	github.com/360EntSecGroup-Skylar/excelize/v2 v2.3.2
