To deal with import av non-compliant JWKS.

[rohe]

• Any changes relevant to users are recorded in the CHANGELOG.md.
• The documentation has been updated, if necessary.

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[codecov-io]

Codecov Report

Merging #582 into master will increase coverage by 0.07%.
The diff coverage is 90%.

@@            Coverage Diff             @@
##           master     #582      +/-   ##
==========================================
+ Coverage   60.18%   60.26%   +0.07%     
==========================================
  Files          62       62              
  Lines       11266    11272       +6     
  Branches     1985     1987       +2     
==========================================
+ Hits         6781     6793      +12     
+ Misses       3930     3924       -6     
  Partials      555      555

Impacted Files	Coverage Δ
src/oic/oic/provider.py	61.83% <100%> (ø)	⬆️
src/oic/utils/authn/authn_context.py	37.4% <100%> (ø)	⬆️
src/oic/utils/keyio.py	67.36% <85.71%> (+1.11%)	⬆️

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[tpazderka]

Please resolve the conflicts.

[tpazderka]

Merged by hand.