chore: update go version

go.mod

@@ -1,7 +1,7 @@
 module gin-template
 
-// +heroku goVersion go1.16
-go 1.16
+// +heroku goVersion go1.18
+go 1.18
 
 require (
 	github.com/gin-contrib/sessions v0.0.5
@@ -11,8 +11,38 @@ require (
 	github.com/go-redis/redis/v8 v8.11.5
 	github.com/google/uuid v1.3.0
 	github.com/jinzhu/gorm v1.9.12
-	github.com/stretchr/testify v1.8.0 // indirect
 	golang.org/x/crypto v0.1.0
-	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 )
+
+require (
+	github.com/boj/redistore v0.0.0-20180917114910-cd5dcc76aeff // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-sql-driver/mysql v1.4.1 // indirect
+	github.com/goccy/go-json v0.9.7 // indirect
+	github.com/gomodule/redigo v2.0.0+incompatible // indirect
+	github.com/gorilla/context v1.1.1 // indirect
+	github.com/gorilla/securecookie v1.1.1 // indirect
+	github.com/gorilla/sessions v1.2.1 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.1 // indirect
+	github.com/stretchr/testify v1.8.0 // indirect
+	github.com/ugorji/go/codec v1.2.7 // indirect
+	golang.org/x/net v0.1.0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
+	golang.org/x/text v0.4.0 // indirect
+	google.golang.org/appengine v1.4.0 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
+	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)