Merge branch 'stable-3.1' into 'stable-3.2'

* stable-3.1:
  Upgrade bazlets to latest stable-3.1 to build with 3.1.11 API
  Upgrade bazlets to latest stable-3.1 to build with 3.1.10 API
  Bump Bazel version to 3.7.0
  Upgrade bazlets to latest stable-3.0 to build with 3.0.13 API
  Bump Bazel version to 3.5.0
  Upgrade bazlets to latest stable-3.1 to build with 3.1.8 API
  Upgrade bazlets to latest stable-3.0 to build with 3.0.12 API
  Upgrade bazlets to latest stable-2.16 to build with 2.16.22 API
  Bump Bazel version to 3.4.1

Change-Id: I00ee047de8d772415178783f41e9ff0bfbbaa324