chore(#591): update dependencies

[m5r]

Description

medic/cht-conf#591

I upgraded all dependencies that still supported Node.js 8. Most of the remaining dependencies are currently dropping support for Node.js 14 so it might be a while before we can upgrade them.

Code review items

• Readable: Concise, well named, follows the style guide, documented if necessary.
• Documented: Configuration and user documentation on cht-docs
• Tested: Unit and/or integration tests where appropriate
• Backwards compatible: Works with existing data and configuration. Any breaking changes documented in the release notes.

License

The software is provided under AGPL-3.0. Contributions to this project are accepted under the same license.

[m5r]

@njuguna-n could you review this small PR please?

[medic-ci]

:tada: This PR is included in version 3.21.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: