Orderer v3: update fabric-proto-go dependency

[tock-ibm]

config protobuf messages changed with the new BFT work. The dependency below needs to be updated to reflect fabric main:
github.com/hyperledger/fabric-protos-go v0.0.0-20200424173316-dd554ba3746e

->

github.com/hyperledger/fabric-protos-go v0.3.0

also update to go 1.20

[MayRosenbaum]

I'll take it

[denyeart]

Thanks @MayRosenbaum

Actually we'd like to move to github.com/hyperledger/fabric-protos-go-apiv2 v0.3.0 since fabric-admin-sdk uses fabric-protos-go-apiv2 and intends to pull in fabric-config dependency. See also #53.

@SamYuan1990 is it ok for fabric-admin-sdk to go to v0.3.0 as well? Hopefully that doesn't cause any problem supporting both Fabric v2.5 (protos v0.2.0) and Fabric v3.0 (protos v0.3.0).

[tock-ibm]

@MayRosenbaum After some discussions, the path forward is to:

• First move fabric-config to github.com/hyperledger/fabric-protos-go v0.3.0, in order to pick up the related BFT changes for v3.
• Later, as part of a bigger move to upgrade fabric to github.com/hyperledger/fabric-protos-go-apiv2 v0.3.0, to change fabric-config to that implementation (see Use new (non-deprecated) protocol buffer bindings fabric#3650).

In this issue we'll handle the first part, #53 will be used for the second part.

[tock-ibm]

done