add info of Bazel

[hellomynameisjiji]

Description

• Add information about the supported bazel version

Affected Dependencies

How has this been tested?

Checklist

• [x] I have followed the Contribution Guidelines and Code of Conduct
• [x] I have commented my code following the OpenMined Styleguide
• [x] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests

Label

label:"Type: Testing :test_tube:"

[hellomynameisjiji]

Sure! I pushed the change, but I'm not sure if I put that in right place.