[Security] Bump handlebars from 4.1.2 to 4.7.1 in /api

[dependabot-preview]

Bumps handlebars from 4.1.2 to 4.7.1. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

High severity vulnerability that affects handlebars Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's proto and defineGetter properties, which may allow an attacker to execute arbitrary code through crafted payloads.

Affected versions: < 4.3.0

Changelog

Sourced from handlebars's changelog.

v4.7.1 - January 12th, 2020

Bugfixes:

• fix: fix log output in case of illegal property access - f152dfc
• fix: log error for illegal property access only once per property - 3c1e252

Compatibility notes:

• no incompatibilities are to be expected.

Commits

v4.7.0 - January 10th, 2020

Features:

• feat: default options for controlling proto access - 7af1c12, #1635
  • This makes it possible to disable the prototype access restrictions added in 4.6.0
  • an error is logged in the console, if access to prototype properties is attempted and denied and no explicit configuration has taken place.

Compatibility notes:

• no compatibilities are expected

Commits

v4.6.0 - January 8th, 2020

Features:

• feat: access control to prototype properties via whitelist (#1633)- d03b6ec

Bugfixes:

• fix(runtime.js): partials compile not caching (#1600) - 23d58e7

Chores, docs:

• various refactorings and improvements to tests - d7f0dcf, 187d611, d337f40
• modernize the build-setup
  • use prettier to format and eslint to verify - c40d9f3, 8901c28, e97685e, 1f61f21
  • use nyc instead of istanbul to collect coverage - 164b7ff, 1ebce2b
  • update build code to use modern javascript and make it cleaner - 14b621c, 1ec1737, 3a5b65e, dde108e, 04b1984, 587e7a3
  • restructur build commands - e913dc5,
• eslint rule changes - ac4655e, dc54952
• Update (C) year in the LICENSE file - d1fb07b
• chore: try to fix saucelabs credentials (#1627) -
• Update readme.md with updated links (#1620) - edcc84f

... (truncated)

Commits

• 14ba3d0 v4.7.1
• 4cddfe7 Update release notes
• f152dfc fix: fix log output in case of illegal property access
• 3c1e252 fix: log error for illegal property access only once per property
• 0d5c807 v4.7.0
• 1f0834b Update release notes
• 575d877 fix: use "logger" instead of console.error
• 7af1c12 feat: default options for controlling proto access
• 91a1b5d v4.6.0
• 770d746 Update release notes
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #1395.