Bump Node version in Travis config

[anoopjb]

We updated Node version to 14.16 as recommended by protecode scan in #1276
Updating the Node version in Travis config.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/177379347

The labels on this github issue will be updated when the story is started.

[codecov]

Codecov Report

Merging #1285 (e3342ef) into master (2af64cc) will decrease coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1285      +/-   ##
==========================================
- Coverage   71.27%   71.13%   -0.14%     
==========================================
  Files          43       43              
  Lines        3749     3749              
==========================================
- Hits         2672     2667       -5     
- Misses        759      762       +3     
- Partials      318      320       +2     

[coveralls]

Pull Request Test Coverage Report for Build 5233

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 89.16%

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Totals
Change from base Build 5230:	0.0%
Covered Lines:	9447
Relevant Lines:	10224

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💛 - Coveralls