Update Serval.Client to 1.13.0

[Nateowami]

PR opened to test whether this client version is compatible with SF with no changes by running the e2e tests.

Hold off on merging until Serval actually ships this version to live.

Serval 1.13.0 is on prod.

This change is 

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.82%. Comparing base (9c1483e) to head (dbfd10d).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3608   +/-   ##
=======================================
  Coverage   82.82%   82.82%           
=======================================
  Files         610      610           
  Lines       37398    37398           
  Branches     6127     6127           
=======================================
  Hits        30974    30974           
  Misses       5491     5491           
  Partials      933      933           

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