Encode raw queries as base64: The missing commit

[ethanfrey]

Forgot to push before merging #284

[codecov]

Codecov Report

Merging #286 into master will increase coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #286      +/-   ##
==========================================
+ Coverage   74.06%   74.15%   +0.08%     
==========================================
  Files          27       27              
  Lines        2364     2364              
==========================================
+ Hits         1751     1753       +2     
+ Misses        489      488       -1     
+ Partials      124      123       -1     

Impacted Files	Coverage Δ
x/wasm/internal/keeper/keeper.go	90.18% <0.00%> (+0.61%)	⬆️

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