Release/5.6.0 RC

[JulianKast]

5.6.0 RC

This PR is [ready] for review.

Risk

This PR makes [minor] API changes.

Testing Plan

• Full Test Plan

Summary

See the 5.6.0 Project

CLA

• [x] I have signed the CLA

[codecov[bot]]

Codecov Report

Merging #1837 (b18ae82) into master (c1afd4f) will decrease coverage by 0.00%. The diff coverage is 43.92%.

@@             Coverage Diff              @@
##             master    #1837      +/-   ##
============================================
- Coverage     54.07%   54.06%   -0.01%     
- Complexity     5534     5538       +4     
============================================
  Files           562      562              
  Lines         25809    25869      +60     
  Branches       3395     3415      +20     
============================================
+ Hits          13956    13987      +31     
- Misses        10582    10603      +21     
- Partials       1271     1279       +8     

Impacted Files	Coverage Δ
...martdevicelink/transport/SdlBroadcastReceiver.java	3.02% <0.00%> (-0.12%)	:arrow_down:
...tdevicelink/transport/SdlRouterStatusProvider.java	0.00% <0.00%> (ø)
...link/transport/USBAccessoryAttachmentActivity.java	0.00% <0.00%> (ø)
...java/com/smartdevicelink/proxy/rpc/AddCommand.java	100.00% <ø> (ø)
...java/com/smartdevicelink/proxy/rpc/AddSubMenu.java	100.00% <ø> (ø)
...com/smartdevicelink/proxy/rpc/BodyInformation.java	87.17% <ø> (ø)
...java/com/smartdevicelink/proxy/rpc/MenuParams.java	100.00% <ø> (ø)
...a/com/smartdevicelink/proxy/rpc/OnVehicleData.java	97.56% <ø> (ø)
.../main/java/com/smartdevicelink/proxy/rpc/Show.java	94.23% <ø> (ø)
...managers/screen/TextAndGraphicUpdateOperation.java	70.88% <51.42%> (-0.27%)	:arrow_down:
... and 6 more