This PR upgrades Bedrock dependencies v0.5.0. Hive needs this in order to perform withdrawals properly since v0.4.0 does not include the change to index withdrawals by block number.

It also adds a Makefile command to generate future Bedrock version tags and push them.

Note the GOPRIVATE change in `mod-tidy` - I needed to add this to circumvent the Go version proxy since it's slow to index new versions.