go.mod: bump go version from 1.18 to 1.19

go.mod

@@ -1,9 +1,11 @@
 module github.com/hashicorp/packer-plugin-googlecompute
 
-go 1.18
+go 1.19
 
 require (
 	cloud.google.com/go/compute/metadata v0.1.1
+	github.com/gofrs/uuid v4.0.0+incompatible
+	github.com/google/go-cmp v0.5.9
 	github.com/hashicorp/hcl/v2 v2.13.0
 	github.com/hashicorp/packer-plugin-sdk v0.4.0
 	github.com/hashicorp/vault/api v1.1.1
@@ -31,11 +33,9 @@ require (
 	github.com/dylanmei/iso8601 v0.1.0 // indirect
 	github.com/fatih/color v1.12.0 // indirect
 	github.com/gofrs/flock v0.8.1 // indirect
-	github.com/gofrs/uuid v4.0.0+incompatible // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.2.0 // indirect
 	github.com/googleapis/gax-go/v2 v2.6.0 // indirect