module: update modules

Author: zchee

go.mod

@@ -1,5 +1,7 @@
 module github.com/go-language-server/jsonrpc2
 
+go 1.12
+
 require (
 	github.com/francoispqt/gojay v1.2.11-0.20190329162224-e46791d21b5e
 	github.com/google/go-cmp v0.3.0
@@ -8,5 +10,5 @@ require (
 	go.uber.org/atomic v1.4.0
 	go.uber.org/multierr v1.1.1-0.20190429210458-bd075f90b08f // indirect
 	go.uber.org/zap v1.10.1-0.20190430155229-8a2ee5670ced
-	golang.org/x/xerrors v0.0.0-20190212162355-a5947ffaace3
+	golang.org/x/xerrors v0.0.0-20190516184347-8115aa61538e
 )

go.sum

@@ -17,5 +17,5 @@ go.uber.org/multierr v1.1.1-0.20190429210458-bd075f90b08f h1:Q0q3m6foxW9fUIiNtEl
 go.uber.org/multierr v1.1.1-0.20190429210458-bd075f90b08f/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/zap v1.10.1-0.20190430155229-8a2ee5670ced h1:2/OCbaWT0ZStdlrAU9heVF2FAVUoP+Mky/bPxP2Mqhs=
 go.uber.org/zap v1.10.1-0.20190430155229-8a2ee5670ced/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
-golang.org/x/xerrors v0.0.0-20190212162355-a5947ffaace3 h1:P6iTFmrTQqWrqLZPX1VMzCUbCRCAUXSUsSpkEOvWzJ0=
-golang.org/x/xerrors v0.0.0-20190212162355-a5947ffaace3/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20190516184347-8115aa61538e h1:GZc5hJQaj9QwsCgIB16JPWkpIiZB3PjXyUrl01otLII=
+golang.org/x/xerrors v0.0.0-20190516184347-8115aa61538e/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=