Update dependency codecov to v3.6.4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
codecov	devDependencies	patch	3.6.1 -> 3.6.4

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Release Notes

codecov/codecov-node

### [`v3.6.4`](https://togithub.com/codecov/codecov-node/releases/v3.6.4) [Compare Source](https://togithub.com/codecov/codecov-node/compare/v3.6.3...v3.6.4) Fix for Cirrus CI ### [`v3.6.3`](https://togithub.com/codecov/codecov-node/releases/v3.6.3) [Compare Source](https://togithub.com/codecov/codecov-node/compare/v3.6.2...v3.6.3) AWS Codebuild fixes + package updates ### [`v3.6.2`](https://togithub.com/codecov/codecov-node/releases/v3.6.2) [Compare Source](https://togithub.com/codecov/codecov-node/compare/v3.6.1...v3.6.2) command line args sanitised

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Renovate configuration

:date: Schedule: "before 3am on the first day of the month" (UTC).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or if you tick the rebase/retry checkbox below.

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[codecov[bot]]

Codecov Report

Merging #379 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #379   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           3      3           
  Lines          85     85           
  Branches       25     25           
=====================================
  Hits           85     85

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