docs: Remove old references to 'Bearer' authentication

[MoritzWeber0]

Bearer authentication is no longer supported.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.36%. Comparing base (8a98406) to head (138891b).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1849   +/-   ##
=======================================
  Coverage   84.36%   84.36%           
=======================================
  Files         195      195           
  Lines        6487     6487           
  Branches      720      720           
=======================================
  Hits         5473     5473           
  Misses        855      855           
  Partials      159      159           

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

[github-actions]

This report was generated by comparing e763576 with 8a98406.
If you would like to check difference, please check here.

ArtifactName: reg

✨✨ That's perfect, there is no visual difference! ✨✨

item	count
pass	302
change	0
new	0
delete	0