fix: Add Authorization header to CORS allowed headers

[fredcarle]

Relevant issue(s)

Resolves #3177

Description

This PR adds the Authorization header to the CORS list of allowed headers. This bug what flagged from a partner trying to use authorization from a browser app.

Tasks

• I made sure the code is well commented, particularly hard-to-understand areas.
• I made sure the repository-held documentation is changed accordingly.
• I made sure the pull request title adheres to the conventional commit style (the subset used in the project can be found in tools/configs/chglog/config.yml).
• I made sure to discuss its limitations such as threats to validity, vulnerability to mistake and misuse, robustness to invalidation of assumptions, resource requirements, ...

How has this been tested?

updated unit test with Access-Control-Request-Headers header

Specify the platform(s) on which this was tested:

• MacOS

[nasdf]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.46%. Comparing base (d95c51f) to head (d1b6c0b).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3178      +/-   ##
===========================================
- Coverage    77.48%   77.46%   -0.02%     
===========================================
  Files          357      357              
  Lines        34809    34809              
===========================================
- Hits         26969    26962       -7     
- Misses        6229     6236       +7     
  Partials      1611     1611              

Flag	Coverage Δ
all-tests	77.46% <ø> (-0.02%)	⬇️

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

Files with missing lines	Coverage Δ
http/middleware.go	70.00% <ø> (ø)

... and 14 files with indirect coverage changes

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