providers/proxy: use access token (cherry-pick #8022)

[gcp-cherry-pick-bot]

Cherry-picked providers/proxy: use access token (#8022)

Signed-off-by: Jens Langhammer jens@goauthentik.io

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8b12c6a) 92.64% compared to head (d8c1b6b) 92.64%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           version-2023.10    #8023      +/-   ##
===================================================
- Coverage            92.64%   92.64%   -0.01%     
===================================================
  Files                  588      588              
  Lines                29075    29075              
===================================================
- Hits                 26937    26936       -1     
- Misses                2138     2139       +1     

Flag	Coverage Δ
e2e	50.75% <ø> (-0.08%)	⬇️
integration	25.92% <ø> (ø)
unit	89.67% <ø> (ø)

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