Mark CBMC version 5.66.0

[NlightNFotis]

• Each commit message has a non-empty body, explaining why the change was made.
• Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• The feature or user visible behaviour I have added or modified has been documented in the User Guide in doc/cprover-manual/
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
• My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
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[codecov]

Codecov Report

Merging #7131 (8aff049) into develop (9a14d1a) will not change coverage.
The diff coverage is 23.07%.

❗ Current head 8aff049 differs from pull request most recent head 820529c. Consider uploading reports for the commit 820529c to get more accurate results

@@           Coverage Diff            @@
##           develop    #7131   +/-   ##
========================================
  Coverage    77.86%   77.86%           
========================================
  Files         1576     1576           
  Lines       181808   181808           
========================================
  Hits        141573   141573           
  Misses       40235    40235           

Impacted Files	Coverage Δ
src/ansi-c/c_typecheck_expr.cpp	74.17% <0.00%> (ø)
src/ansi-c/goto_check_c.cpp	91.65% <0.00%> (ø)
src/util/pointer_expr.h	80.83% <0.00%> (ø)
src/solvers/flattening/boolbv_mod.cpp	93.33% <100.00%> (ø)

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