Consensus: Consensus version v40, set major release to 4 and reset minor.

[gmalouf]

Summary

Consensus version v40, major release version 4!

Test Plan

Existing tests should pass.

[codecov]

Codecov Report

Attention: Patch coverage is 57.44681% with 20 lines in your changes missing coverage. Please review.

Project coverage is 52.10%. Comparing base (a10b6b3) to head (c4e1cca).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
ledger/store/trackerdb/sqlitedriver/kvsIter.go	0.00%	10 Missing ⚠️
...edger/store/trackerdb/sqlitedriver/sqlitedriver.go	0.00%	4 Missing ⚠️
ledger/catchupaccessor.go	33.33%	2 Missing ⚠️
ledger/store/trackerdb/dualdriver/dualdriver.go	0.00%	2 Missing ⚠️
ledger/store/trackerdb/generickv/reader.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6207      +/-   ##
==========================================
+ Coverage   50.93%   52.10%   +1.16%     
==========================================
  Files         643      649       +6     
  Lines       86223    86311      +88     
==========================================
+ Hits        43915    44969    +1054     
+ Misses      39433    38488     -945     
+ Partials     2875     2854      -21     

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[onetechnical]

The consensus and version changes look correct, and tests have passed.