Update module golang.org/x/sync to v0.3.0

See merge request !27

The integration test checks the server + pull combination, with all
features including TLS ACLs.

Update module github.com/golang/protobuf to v1.5.3

See merge request !21

Update module google.golang.org/protobuf to v1.29.1

See merge request !22

Update module github.com/grpc-ecosystem/go-grpc-middleware to v1.4.0

See merge request !23

Update module google.golang.org/grpc to v1.53.0

See merge request !19

Update module golang.org/x/sync to v0.1.0

See merge request !20

Update module github.com/google/go-cmp to v0.5.9

See merge request !17

Update golang.org/x/sync digest to f12130a

See merge request !16

Update module google.golang.org/grpc to v1.49.0

See merge request !15

Update module google.golang.org/protobuf to v1.28.1

See merge request !9

Update golang.org/x/sync digest to 7fc1605

See merge request !13

Update module github.com/DataDog/zstd to v1.5.2+patch1

See merge request !11

Update golang.org/x/sync digest to 886fb93

See merge request !10

Update module google.golang.org/grpc to v1.48.0

See merge request !8

Update module google.golang.org/grpc to v1.43.0

See merge request !5

Update module google.golang.org/grpc to v1.42.0

See merge request !3