[macOS] Bazel 4.0.0 breaking changes

[MaksimZhukov]

Breaking changes
Bazel will be updated from 3.7.1 to 4.0.0.

Target date
Image deployment will start January, 25 and will take 3-4 days.

The motivation for the changes
We would like to provide images with the latest stable updates.

Possible impact
Bazel has a bunch of breaking changes, find details in https://blog.bazel.build/2021/01/19/bazel-4-0.html

Also you could experience the issues if use Bazel on macOS with non-default Xcode: Bazel 4.0 doesn't support Xcode <= 11.3.1 (because of Clang incompatibility). If you need to use Bazel with old Xcode, make sure that you freeze Bazel < 4.0. Find more details in bazelbuild/bazel#12882

Virtual environments affected

• Ubuntu 16.04
• Ubuntu 18.04
• Ubuntu 20.04
• macOS 10.13
• macOS 10.14
• macOS 10.15
• macOS 11.0
• Windows Server 2016 R2
• Windows Server 2019

Mitigation ways
Please, use the following workaround to install bazel 3.7.1 in runtime:

export USE_BAZEL_VERSION="3.7.1"
bazel --version

[gtothe7]

#924

[MaksimZhukov]

Rollout of these changes has been finished.