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

Update golang.org/x/sync commit hash to 036812b

See merge request !2

Configure Renovate

See merge request !1

Introduce a new 'PEER' ACL operation, so that peeres can be
authenticated using the same mechanism as other clients.

Fixes issue #1.