Bump cirrusid/simplesamlphp to v2.3.7

[cicnavi]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.79%. Comparing base (5198a51) to head (8864459).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #296   +/-   ##
=========================================
  Coverage     52.79%   52.79%           
  Complexity     1463     1463           
=========================================
  Files           140      140           
  Lines          6361     6361           
=========================================
  Hits           3358     3358           
  Misses         3003     3003           

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