upgrade fosite to v0.49.0 and handle its API changes

[cfryanr]

Release note:

NONE

[netlify]

✅ Deploy Preview for pinniped-dev canceled.

Name	Link
🔨 Latest commit	90c9586
🔍 Latest deploy log	https://app.netlify.com/sites/pinniped-dev/deploys/675c7a7abf4bda0008b126fc

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 31.94%. Comparing base (57fc177) to head (90c9586).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/federationdomain/storage/kube_storage.go	70.00%	2 Missing and 1 partial ⚠️
internal/federationdomain/storage/null_storage.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2158   +/-   ##
=======================================
  Coverage   31.94%   31.94%           
=======================================
  Files         379      379           
  Lines       62087    62093    +6     
=======================================
+ Hits        19832    19838    +6     
  Misses      41725    41725           
  Partials      530      530           

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