Missing build info for 4.0.2

the buildinfo/versions.json file is missing the information for the latest available linux package 4.0.2.
The info is needed for replay processing with the PySC2 framework

Related issue in PySC2 Repository:
[https://github.com/deepmind/pysc2/issues/131](https://github.com/deepmind/pysc2/issues/131)

Open buildinfo/versions.json and inspect how existing Linux package entries are represented. Use the related PySC2 issue 131 to confirm the replay-processing requirement, then add the missing information for package 4.0.2; done means the file contains a valid 4.0.2 entry.

Written by the indexing model from the issue text.