[Snyk] Upgrade typeorm from 0.2.30 to 0.3.20

[Baroshem]

This PR was automatically created by Snyk using the credentials of a real user.


Snyk has created this PR to upgrade typeorm from 0.2.30 to 0.3.20.

:information_source: 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 520 versions ahead of your current version.

• The recommended version was released on 5 months ago.

Issues fixed by the recommended upgrade:

	Issue	Score	Exploit Maturity
	Prototype Pollution SNYK-JS-XML2JS-5414874	586	Proof of Concept

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• This PR was automatically created by Snyk using the credentials of a real user.
• Max score is 1000. Note that the real score may have changed since the PR was raised.

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