Avoid hashing CARGO_ variables that are redundant/unrelated

[kornelski]

Excludes more irrelevant/redundant CARGO_ variables based on a blocklist

(Another option could be to remove hashing of the CARGO_ variables completely — #2494)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.35%. Comparing base (9de8d18) to head (26bb890).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2495   +/-   ##
=======================================
  Coverage   70.34%   70.35%           
=======================================
  Files          64       64           
  Lines       35318    35323    +5     
=======================================
+ Hits        24845    24850    +5     
  Misses      10473    10473           

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[Xuanwo]

Thank you for this change!