dependencies: Upgrade go SDK to v2.

[winder]

Summary

Split out SDK updates from #1415

Test Plan

Existing regression tests.

[codecov]

Codecov Report

Merging #1423 (c29a8cc) into develop (f16d927) will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1423      +/-   ##
===========================================
+ Coverage    65.10%   65.12%   +0.02%     
===========================================
  Files           79       79              
  Lines        11276    11276              
===========================================
+ Hits          7341     7344       +3     
+ Misses        3370     3368       -2     
+ Partials       565      564       -1     

Impacted Files	Coverage Δ
accounting/accounting.go	90.90% <ø> (ø)
accounting/rewind.go	36.09% <ø> (ø)
api/converter_utils.go	92.61% <ø> (ø)
api/handlers.go	75.47% <ø> (ø)
api/pointer_utils.go	94.36% <ø> (ø)
conduit/init_provider.go	55.55% <ø> (ø)
conduit/plugins/importers/algod/algod_importer.go	77.27% <ø> (ø)
conduit/plugins/importers/filereader/filereader.go	88.33% <ø> (ø)
data/block_export_data.go	82.69% <ø> (ø)
fetcher/fetcher.go	63.98% <ø> (ø)
... and 16 more

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