Update to use 2021 version of the epacamd_eia crosswalk

[zschira]

Use 2021 version of crosswalk

[aesharpe]

Exciting! Do we know that it won't break anything? Also the crosswalk doesn't currently have a year column, I wonder if this is something we want to add?

[codecov]

Codecov Report

Patch coverage: 100.0% and no project coverage change.

Comparison is base (8541226) 86.9% compared to head (4018e3c) 87.0%.

Additional details and impacted files

@@          Coverage Diff          @@
##             dev   #2566   +/-   ##
=====================================
  Coverage   86.9%   87.0%           
=====================================
  Files         84      84           
  Lines       9604    9604           
=====================================
+ Hits        8352    8357    +5     
+ Misses      1252    1247    -5     

Impacted Files	Coverage Δ
src/pudl/workspace/datastore.py	75.7% <ø> (+1.8%)	⬆️
src/pudl/etl/glue_assets.py	98.0% <100.0%> (ø)

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