Update jsdom to v16

[pgoldrbx]

Description

Used in the DOM interface for using JsonML to interact with the DOM
and impacts functionality within a node runtime environment.

Update the html.patch method to prevent raising an error on text nodes.
Prior to updating jsdom, the node was not updated but no error was emitted.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore, documentation, cleanup

Related Issue

n/a

Motivation and Context

Keeping dependencies up to date.

How Has This Been Tested?

This should be pretty well covered by existing tests. I worked through and extended coverage in #25 and #26 and feel pretty good about this.

Screenshots (if appropriate):

n/a

Checklist:

• My code follows the code style of this project.
• I have updated the documentation (if required).
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[coveralls]

Pull Request Test Coverage Report for Build 116

• 3 of 3 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 81.044%

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Totals
Change from base Build 114:	0.1%
Covered Lines:	334
Relevant Lines:	387

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💛 - Coveralls

[neilius]

Tests are all passing and the changes here look pretty straightforward. One little note, but otherwise good

[neilius]

I know this is all over the codebase, but it might be nice to use the constant here (Node.TEXT_NODE) so you don't need the comment. I understand if you want to leave it so it's consistent though

[pgoldrbx]

100% agree. I think constants would be a good refactor. went for consistency