v23/devtools: add syncbase profile as a dependency for the www tests
v23/devtools: add syncbase profile as a dependency for the www tests

One of the www tests (tutorials-core) builds all binaries under
v.io/x/ref/...; as of v.io/c/13091, one of the binaries links the
syncbase implementation. This CL adds the missing dependency to the
www test initialization.

Change-Id: If465b8ed72d8f9985901d6b4112135b3afc5d0bd

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools