Allow user authentication via SFTP token

[liam-lloyd]

Currently, only some user-accessible endpoints allow access tokens from the SFTP service. This commit updates the authentication middleware to allow this for all user-accessible endpoints.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.55%. Comparing base (b5afd2c) to head (6ab02f4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #772      +/-   ##
==========================================
- Coverage   98.55%   98.55%   -0.01%     
==========================================
  Files         109      109              
  Lines        2777     2769       -8     
  Branches      465      458       -7     
==========================================
- Hits         2737     2729       -8     
  Misses         36       36              
  Partials        4        4              

Flag	Coverage Δ
api	98.55% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[liam-lloyd]

This can be tested by deploying this branch to dev, uploading a file via SFTP, and then verifying that that file is processed by Archivematica.