Upload any heap dumps produced during CI build

[3flex]

This may allow us to investigate build failures due to out of memory conditions.

One possible cause: Kotlin/dokka#1405

[codecov]

Codecov Report

Merging #3758 (e12c39e) into main (b2c13aa) will not change coverage.
The diff coverage is n/a.

❗ Current head e12c39e differs from pull request most recent head c41a4f6. Consider uploading reports for the commit c41a4f6 to get more accurate results

@@            Coverage Diff            @@
##               main    #3758   +/-   ##
=========================================
  Coverage     78.75%   78.75%           
  Complexity     2900     2900           
=========================================
  Files           473      473           
  Lines          9336     9336           
  Branches       1722     1722           
=========================================
  Hits           7353     7353           
  Misses         1075     1075           
  Partials        908      908           

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