ref: Make ColibriSession.relayId non-nullable (avoid use of !!).

[bgrozev]

No description provided.

[codecov]

Codecov Report

Merging #1110 (9eaae83) into master (42dd079) will decrease coverage by 0.01%.
The diff coverage is 5.88%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1110      +/-   ##
============================================
- Coverage     27.79%   27.79%   -0.01%     
  Complexity      494      494              
============================================
  Files           128      128              
  Lines          7760     7757       -3     
  Branches       1097     1097              
============================================
- Hits           2157     2156       -1     
+ Misses         5329     5326       -3     
- Partials        274      275       +1     

Files Changed	Coverage Δ
.../src/main/kotlin/org/jitsi/jicofo/bridge/Bridge.kt	71.42% <0.00%> (-0.96%)	⬇️
...org/jitsi/jicofo/bridge/BridgeSelectionStrategy.kt	75.75% <0.00%> (ø)
...org/jitsi/jicofo/bridge/colibri/Colibri2Session.kt	0.00% <0.00%> (ø)
...i/jicofo/bridge/colibri/ColibriV2SessionManager.kt	0.00% <0.00%> (ø)
...src/main/kotlin/org/jitsi/jicofo/bridge/Cascade.kt	74.05% <100.00%> (ø)

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[JonathanLennox]

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