Chore: Upgrade to Protobuf Edition 2024

[meling]

We should take advantage of The new Opaque API coming in the new protobuf 2024 edition (should be released early 2025.)

Note: It should be possible to automate some or all of this using the open2opaque tool.

[meling]

A quick experiment resulted in the following issue:

% make protos
protoc -I=.:/Users/meling/go/pkg/mod/github.com/relab/[email protected]:internal/proto \
		--go_out=paths=source_relative:. \
		--gorums_out=paths=source_relative:. \
		internal/proto/clientpb/client.proto
internal/proto/clientpb/client.proto: is an editions file, but code generator protoc-gen-gorums hasn't been updated to support editions yet.  Please ask the owner of this code generator to add support or switch back to proto2/proto3.

See https://protobuf.dev/editions/overview/ for more information.--gorums_out: 
make: *** [internal/proto/clientpb/client.pb.go] Error 1

Hence, we must first update gorums.