go/badger: bump to 20.07.0

[ptrus]

Note: only diff to the commit we were using before is the added changelog.

[codecov]

Codecov Report

Merging #3182 into master will increase coverage by 0.45%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3182      +/-   ##
==========================================
+ Coverage   68.10%   68.56%   +0.45%     
==========================================
  Files         386      386              
  Lines       37962    37962              
==========================================
+ Hits        25855    26027     +172     
+ Misses       8810     8620     -190     
- Partials     3297     3315      +18     

Impacted Files	Coverage Δ
go/worker/compute/executor/committee/state.go	74.07% <0.00%> (-11.12%)	⬇️
go/consensus/tendermint/epochtime/epochtime.go	78.78% <0.00%> (-7.58%)	⬇️
go/worker/compute/executor/committee/node.go	61.16% <0.00%> (-5.45%)	⬇️
go/keymanager/client/client.go	82.64% <0.00%> (-4.14%)	⬇️
go/runtime/host/sandbox/sandbox.go	67.28% <0.00%> (-4.09%)	⬇️
go/storage/mkvs/lookup.go	73.46% <0.00%> (-4.09%)	⬇️
go/consensus/tendermint/full/services.go	78.90% <0.00%> (-3.91%)	⬇️
go/worker/keymanager/handler.go	60.37% <0.00%> (-3.78%)	⬇️
go/runtime/host/protocol/connection.go	62.16% <0.00%> (-3.48%)	⬇️
go/storage/metrics.go	78.26% <0.00%> (-3.27%)	⬇️
... and 41 more

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