Update dependecies:

github.com/grpc-ecosystem/grpc-gateway v1.14.6 -> grpc-gateway v1.16.0
  golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e->v0.0.0-20210220033141-f8bda1e9f3ba

scripts/update_dep.sh

@@ -20,7 +20,7 @@ function maybe_update_module {
 
   deps=$(go list -f '{{if not .Indirect}}{{if .Version}}{{.Path}},{{.Version}}{{end}}{{end}}' -m all)
   if [[ "$deps" == *"${mod}"* ]]; then
-    if [ -z "${version}" ]; then
+    if [ -z "${ver}" ]; then
       run go get "${mod}"
     else
       run go get "${mod}@${ver}"
@@ -29,4 +29,4 @@ function maybe_update_module {
  }
 
 go mod tidy
-run_for_modules maybe_update_module
+run_for_modules maybe_update_module