Update the lodash JS library

[ccostino]

We need to update the lodash JS library (see Dependabot for details).

This might result in opening a much larger can of worms with our JS dependencies, so hopefully we can keep it to just this for now but use it as a basis for updating other libraries in the new future.

Implementation Sketch and Acceptance Criteria

• Investigate what it would take to get lodash updated on our side, and just lodash and whatever it requires.
• Make the necessary changes
• Make sure the site still builds properly (especially static assets)
• Make sure the site still functions correctly
• Make sure all tests pass

Security Considerations

• We need to make sure we're keeping our libraries up-to-date to address security advisories.

[terrazoon]

I think this is a false alarm from dependabot:

The latest version of lodash is 4.17.21 ... we are on it
The latest version of lodash.template is 4.5.0 ... we are on it

I think dependabot is confusing lodash.template with lodash and thinking it should be 4.17.21, but that's not possible.