version: start development towards 7.0.18

[inashivb]

No description provided.

[suricata-qa]

Information: QA skipped due to no C or rust code changed detected. Set to force a run.

Pipeline = code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.52%. Comparing base (f707f32) to head (872704f).
⚠️ Report is 1 commits behind head on main-7.0.x.

Additional details and impacted files

@@              Coverage Diff               @@
##           main-7.0.x   #15824      +/-   ##
==============================================
+ Coverage       81.51%   81.52%   +0.01%     
==============================================
  Files             925      925              
  Lines          253043   253043              
==============================================
+ Hits           206259   206292      +33     
+ Misses          46784    46751      -33     

Flag	Coverage Δ
fuzzcorpus	62.19% <ø> (+0.02%)	⬆️
suricata-verify	63.90% <ø> (+0.04%)	⬆️
unittests	62.12% <ø> (+0.01%)	⬆️

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[victorjulien]

Merged in #15826, thanks!