fix(deps): update dependency google-gax to ^0.18.0

[renovate]

This Pull Request updates dependency google-gax from ^0.17.1 to ^0.18.0

Note: This PR was created on a configured schedule ("after 10pm,before 5am") and will not receive updates outside those times.

Release Notes

v0.18.0

Compare Source

Implementation Changes

BREAKING CHANGE:

• fix: drop support for node.js 4.x and 9.x (#​262)

New Features

Dependencies

• refactor: add dependency on @​grpc/proto-loader (#​229)
• chore(deps): update dependency typescript to v3 (#​275)
• fix(deps): update dependency @​grpc/proto-loader to ^0.3.0 (#​269)
• chore(deps): update dependency gts to ^0.8.0 (#​266)
• chore(package): Update gts to the latest version 🚀 (#​255)
• chore(package): update @​types/globby to version 8.0.0 (#​257)

Documentation

• Add Code of Conduct

Internal / Testing Changes

• chore: move mocha options to mocha.opts (#​274)
• test: fixing timeouts (#​264)
• Configure Renovate (#​258)
• fix: fix typo in a test (#​260)
• fix: update linking for samples (#​259)
• refactor: remove prettier, eslint, jshint (#​254)

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This PR has been generated by Renovate Bot.

[codecov]

Codecov Report

Merging #263 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #263   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          10     10           
  Lines        1266   1266           
=====================================
  Hits         1266   1266

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