[Snyk] Upgrade jsonschema from 1.2.6 to 1.4.0

[snyk-bot]

Snyk has created this PR to upgrade jsonschema from 1.2.6 to 1.4.0.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 7 versions ahead of your current version.
• The recommended version was released 2 months ago, on 2020-10-22.

Release notes

Package name: jsonschema

• 1.4.0 - 2020-10-22
  

  Prepare 1.4.0

• 1.3.0 - 2020-10-16
  

  Prepare 1.3.0

• 1.2.11 - 2020-10-09
  

  Prepare 1.2.11

• 1.2.10 - 2020-10-07
  

  Prepare 1.2.10, fix for 1.2.9

• 1.2.9 - 2020-10-06
  

  Prepare 1.2.9

• 1.2.8 - 2020-10-02
  

  Prepare 1.2.8

• 1.2.7 - 2020-09-26
  

  Prepare v1.2.7

• 1.2.6 - 2020-04-01
  

  Bugfix release

from jsonschema GitHub release notes

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[coveralls]

Coverage remained the same at 71.483% when pulling 77dc7e7 on snyk-upgrade-e764ea05a418e8e6ca7b9ee5b3aab7ad into 113825a on master.