Update dependency bazelbuild/buildtools to latest version
Update dependency bazelbuild/buildtools to latest version

Included changes:

  - e11f50fc5dd3eea7cef1da1da70de29521562b99 Avoid splitting lines with location references (#938)

BAZEL_BUILDTOOLS_VERSION_REV_ID: e11f50fc5dd3eea7cef1da1da70de29521562b99
Change-Id: Ib01bb584a3196d45ffe9f5231b996cfb52613c03

google/copybara,google/copybara,google/copybara