[FIX] Auth headers for widgets

[Lissy93]

I made a change in v3 which removed the use of axios. This broke header auth for widgets, so this PR just reverts that change, putting axios back in and (hopefully 🤞) fixing the bug.

Category: Bugfix

Overview

Briefly outline your new changes...

Issue Number #1549

New Vars N/A

Screenshot _N/A

Code Quality Checklist (Please complete)

• All changes are backwards compatible
• All lint checks and tests are passing
• There are no (new) build warnings or errors
• (If a new config option is added) Attribute is outlined in the schema and documented
• (If a new dependency is added) Package is essential, and has been checked out for security or performance
• Bumps version, if new feature added

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