Update dependency certifi to v2020.12.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
certifi (source)	==2020.6.20 -> ==2020.12.5

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Release Notes

certifi/python-certifi

v2020.12.5

Compare Source

v2020.11.8

Compare Source

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Configuration

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻️ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
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• you check the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: requirements.txt

Using default tag: latest
latest: Pulling from renovate/python
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8f6e2167f68c: Waiting
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d070b48e7620: Verifying Checksum
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582b9e68c190: Pull complete
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8f6e2167f68c: Download complete