Update .travis.yml

[anirudhs15]

What's changed, or what was fixed?

• item 1
• item 2

Fixes: #issue

Target Live Date: YYYY-MM-DD

• This has been reviewed and approved by (NAME)
• I have run npm test locally and all tests pass.
• I have added the appropriate type-something label.
• I've staged the site and manually verified that my content displays correctly.

CC: @petele

[google-cla]

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