Update gcr.io/oss-fuzz-base/base-builder-rust Docker digest to 53c8856

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gcr.io/oss-fuzz-base/base-builder-rust	final	digest	237ebdb → 53c8856

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.3%. Comparing base (6fb9009) to head (d9b5aae).

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1575   +/-   ##
=====================================
  Coverage   82.2%   82.3%           
=====================================
  Files        129     129           
  Lines      10971   10971           
=====================================
+ Hits        9029    9032    +3     
+ Misses      1942    1939    -3     

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