Bump google.golang.org/grpc from 1.41.0 to 1.56.3 in /examples/server

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.41.0 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.41.0...v1.56.3)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

examples/server/go.mod

@@ -4,16 +4,16 @@ go 1.16
 
 require (
 	github.com/demdxx/goconfig v0.0.0-20191123141255-c40c2d9e90f5
+	github.com/geniusrabbit/udetect v0.0.0-20211001130742-4b256d514f6d
 	github.com/gravitational/log v0.0.0-20200127200505-fdffa14162b0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.11.0
-	github.com/geniusrabbit/udetect v0.0.0-00010101000000-000000000000
-	github.com/stretchr/testify v1.7.0
+	github.com/stretchr/testify v1.9.0
 	github.com/swaggo/files v0.0.0-20210815190702-a29dd2bc99b2
 	go.uber.org/zap v1.19.1
-	google.golang.org/grpc v1.41.0
+	google.golang.org/grpc v1.65.0
 	launchpad.net/gocheck v0.0.0-20140225173054-000000000087 // indirect
 )