Pass prerelease option to nightly builds

[r0qs]

Updates the CI job to use emscripten_build script with prerelease parameter introduced by ethereum/solidity#13581.

Depends on ethereum/solidity#13581.

[cameel]

@r0qs Do you need permissions access to solc-bin? We have same problem as last time, i.e. the PR checks won't pass because this is an external PR.

I actually haven't considered that this will affect all contributions. In that case we might want to fix that after all. See ethereum/solidity#13614.

For now I'll just force-merge this one (once the dependency in the main repo is merged).

[cameel]

Looks good but not approving yet since I have not yet reviewed the dependency in the main repo.

[r0qs]

@r0qs Do you need permissions access to solc-bin? We have same problem as last time, i.e. the PR checks won't pass because this is an external PR.

No, I have permission. Sorry, it was my mistake, I set two git remote trackers in my fork and pushed the branch to the wrong one, haha
I just realized that I did the same for the other PR in the solidity repo. Should I recreate the PR?

I actually haven't considered that this will affect all contributions. In that case we might want to fix that after all. See ethereum/solidity#13614.

Ah, indeed.

[cameel]

Should I recreate the PR?

Like I said, I can just force merge it so no need.

[cameel]

@r0qs This needs to be updated to match ethereum/solidity#13581 (and probably also rebased).