Update GO version (#13)

Author: abhinavdangeti

go.mod

@@ -1,11 +1,14 @@
 module github.com/blevesearch/geo
 
-go 1.12
+go 1.18
 
 require (
 	github.com/blevesearch/bleve_index_api v1.0.5
 	github.com/golang/geo v0.0.0-20210211234256-740aa86cb551
-	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/json-iterator/go v0.0.0-20171115153421-f7279a603ede
+)
+
+require (
+	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/stretchr/testify v1.7.1 // indirect
 )

go.sum

@@ -13,7 +13,6 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=