chore: update composer and npm deps

[justlevine]

What

Updates the Composer and NPM deps to their latest (nonbreaking) versions. Also fixes a typo in GRAPHQL_LOGIN_JWT_SECRET_KEY constant when installing the test environment.

Why

How

Testing Instructions

Additional Info

Checklist:

• [x] My code is tested to the best of my abilities.
• [x] My code follows the WordPress Coding Standards.
• [x] My code has proper inline documentation.
• [x] I have added unit tests to verify the code works as intended.
• [x] I included the relevant changes in CHANGELOG.md

[coveralls]

Coverage: 83.662%. Remained the same when pulling 7d419e91b196c054570a7afac4c4440d31252583 on justlevine:chore/update-deps into 143253ee9b4d79be3d0ec282b2ce995b918bd3c4 on AxeWP:develop.