Revert "Upgrade to go 1.19 and update dependencies (#3069)" (#3085)

This reverts commit bba7c23957.

vendor/github.com/99designs/gqlgen/plugin/servergen/server.go

@@ -1,7 +1,6 @@
 package servergen
 
 import (
-	_ "embed"
 	"errors"
 	"io/fs"
 	"log"
@@ -12,9 +11,6 @@ import (
 	"github.com/99designs/gqlgen/plugin"
 )
 
-//go:embed server.gotpl
-var serverTemplate string
-
 func New(filename string) plugin.Plugin {
 	return &Plugin{filename}
 }
@@ -41,7 +37,6 @@ func (m *Plugin) GenerateCode(data *codegen.Data) error {
 			Filename:    m.filename,
 			Data:        serverBuild,
 			Packages:    data.Config.Packages,
-			Template:    serverTemplate,
 		})
 	}