Update SHA-2 digital signatures

msls 4.8.349 -- Upgrade digital signatures to SHA2

msls 4.8.334 -- Update digital signatures

msls v4.8.333 -- Include rivy fixes

msls 4.8.331 -- Merge rivy changes

msls 4.8.329 -- Include build scripts from rivy

Use semantic versioning (v4.x.y)