[zanata/zanata-platform] a69fd5: Update yarn version in frontend pom.

[GitHub]

  Branch: refs/heads/remove-engines
  Home:   https://github.com/zanata/zanata-platform
  Commit: a69fd5156493802ed4d6ede245ac92c043c21543
      https://github.com/zanata/zanata-platform/commit/a69fd5156493802ed4d6ede245ac92c043c21543
  Author: David Mason <drdmason at gmail.com>
  Date:   2017-10-09 (Mon, 09 Oct 2017)

  Changed paths:
    M server/zanata-frontend/pom.xml

  Log Message:
  -----------
  Update yarn version in frontend pom.