Upgrade to Stargate RC2

[alpe]

Stargate RC2

Left to do:

• manual smoke tests

[codecov]

Codecov Report

Merging #299 into master will decrease coverage by 0.01%.
The diff coverage is 42.85%.

@@            Coverage Diff             @@
##           master     #299      +/-   ##
==========================================
- Coverage   17.26%   17.25%   -0.02%     
==========================================
  Files          34       35       +1     
  Lines       10412    10463      +51     
==========================================
+ Hits         1798     1805       +7     
- Misses       8518     8562      +44     
  Partials       96       96              

Impacted Files	Coverage Δ
app/genesis.go	100.00% <ø> (ø)
x/wasm/internal/types/msg.pb.go	0.55% <ø> (ø)
x/wasm/internal/types/types.pb.go	0.75% <0.00%> (-0.02%)	⬇️
x/wasm/module.go	14.28% <ø> (ø)
app/test_helpers.go	12.50% <12.50%> (ø)
app/export.go	13.18% <40.00%> (-0.15%)	⬇️
app/app.go	88.47% <66.66%> (-0.74%)	⬇️
x/wasm/internal/types/msg.go	64.63% <66.66%> (ø)
x/wasm/internal/keeper/test_common.go	93.23% <100.00%> (+0.20%)	⬆️

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[ethanfrey]

Looked at the diff and seems good.