ci: build with -Werror for -Wimplicit-int-conversion

[catenacyber]

Link to redmine ticket:
None

Describe changes:

• Makes CI error on integer warnings !

libhtp-pr: 369

Modifies #8173 by fixing getting remaining commit

This requires OISF/libhtp#369 to be merged first ;-)

[codecov]

Codecov Report

Merging #8192 (7fd3aaa) into master (3e4f58e) will decrease coverage by 0.11%.
The diff coverage is n/a.

❗ Current head 7fd3aaa differs from pull request most recent head 222f2ac. Consider uploading reports for the commit 222f2ac to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8192      +/-   ##
==========================================
- Coverage   81.84%   81.72%   -0.12%     
==========================================
  Files         965      965              
  Lines      278441   278446       +5     
==========================================
- Hits       227881   227572     -309     
- Misses      50560    50874     +314     

Flag	Coverage Δ
fuzzcorpus	63.57% <ø> (-0.14%)	⬇️
suricata-verify	59.40% <ø> (-0.01%)	⬇️
unittests	63.47% <ø> (-0.01%)	⬇️

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