[Snyk] Security upgrade lodash from 3.10.1 to 4.17.20

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • demo/06_initializers/package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	776/1000 Why? Recently disclosed, Has a fix available, CVSS 9.8	Prototype Pollution SNYK-JS-LODASH-590103	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Check the changes in this PR to ensure they won't cause issues with your project.

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📚 Read more about Snyk's upgrade and patch logic

[coveralls]

Coverage remained the same at 100.0% when pulling 44c58de25692daaf0dfc5fed0782ac4b0218e5db on snyk-fix-2aa038ce9056750c8c74028e283893eb into ab891571b3737f4b83f2836fca0530d12e4ee1c3 on master.