chore(deps): use go-car master version

[rvagg]

Ref: ipld/go-car#254

Depends on getting null-padding added as an option to go-car master, getting a proper tag for this, and getting filecoin-project/go-fil-markets#639 merged (and tagged I suppose).

This is not critical, it's clean-up because Lotus has been depending on a branch of go-car for a long time.

[codecov]

Codecov Report

Merging #7468 (92354de) into master (1993efe) will decrease coverage by 0.07%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master    #7468      +/-   ##
==========================================
- Coverage   39.21%   39.14%   -0.08%     
==========================================
  Files         631      631              
  Lines       66787    66787              
==========================================
- Hits        26191    26141      -50     
- Misses      36024    36070      +46     
- Partials     4572     4576       +4     

Impacted Files	Coverage Δ
node/impl/client/client.go	45.04% <50.00%> (ø)
itests/kit/files.go	97.18% <100.00%> (ø)
journal/types.go	86.66% <0.00%> (-13.34%)	⬇️
chain/events/observer.go	71.64% <0.00%> (-6.72%)	⬇️
extern/sector-storage/manager_calltracker.go	57.70% <0.00%> (-4.85%)	⬇️
chain/exchange/peer_tracker.go	66.66% <0.00%> (-4.31%)	⬇️
storage/wdpost_sched.go	77.22% <0.00%> (-3.97%)	⬇️
journal/fsjournal/fs.go	66.66% <0.00%> (-2.78%)	⬇️
chain/store/store.go	63.00% <0.00%> (-2.50%)	⬇️
miner/miner.go	55.96% <0.00%> (-1.66%)	⬇️
... and 9 more

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[rvagg]

I believe that we don't need the zero=eof for go-car v0 usage here anymore, so we just need an upstream v0.3.2 tag and to get that merged in here along with a matching go-fil-markets and go-commp-utils.

[rvagg]

resolved in current master