[Access] update execution data protobuf to new namespace

[peterargue]

Here are the related protobuf changes: onflow/flow#1353

Update the ExecutionDataAPI to use its own namespace

[codecov-commenter]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (649a038) 55.81% compared to head (a02f7b8) 55.80%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4827      +/-   ##
==========================================
- Coverage   55.81%   55.80%   -0.02%     
==========================================
  Files         938      938              
  Lines       87074    87076       +2     
==========================================
- Hits        48597    48589       -8     
- Misses      34804    34813       +9     
- Partials     3673     3674       +1     

Flag	Coverage Δ
unittests	55.80% <28.57%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
engine/access/state_stream/engine.go	0.00% <0.00%> (ø)
engine/access/state_stream/handler.go	38.09% <33.33%> (-0.62%)	⬇️

... and 7 files with indirect coverage changes

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