* Update to the latest Serai Substrate
* Add Protobuf to build dependencies
Docker shouldn't need updating as this should've been added to the image
in
2dbace5b01.
* Get substrate to build
* Correct protoc build step
* Remove the benchmarking code
There's some macro resolution error that isn't apparent. I worked on it
for about half an hour but...
* Remove unnecessary clone
* Correct runtime-benchmarks flag usage
* Consolidate GitHub CI actions, split out Monero
build now includes the specified Rust toolchain/components.
Added a test dependencies action which grabs Foundry and Monero.
Split the Monero v14 job into a matrixed job in its own workflow flow.
It's now only run when Monero has changes.
* Correct Monero unit/integration tests run timing
Additionally tests a feature-less Monero build.
Also removes a pointless Monero file, which already should have been
removed, causing this workflow to be triggered.
* Correct exclusion and paths
Updates to FROST should re-run the Monero tests to ensure it didn't
introduce API incompatibilities.
