Update jackson-databind to 2.18.8

[suddendust]

https://nvd.nist.gov/vuln/detail/CVE-2026-54512
https://nvd.nist.gov/vuln/detail/CVE-2026-54513
https://nvd.nist.gov/vuln/detail/CVE-2026-54514

All are fixed in 2.18.8.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.43%. Comparing base (53d4149) to head (1722a5c).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #314   +/-   ##
=========================================
  Coverage     81.43%   81.43%           
  Complexity     1549     1549           
=========================================
  Files           242      242           
  Lines          7514     7514           
  Branches        726      726           
=========================================
  Hits           6119     6119           
  Misses          943      943           
  Partials        452      452           

Flag	Coverage Δ
integration	81.43% <ø> (ø)
unit	55.50% <ø> (ø)

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[github-actions]

Test Results

  124 files  ±0    124 suites  ±0   39s ⏱️ +3s
  840 tests ±0    839 ✅ ±0  1 💤 ±0  0 ❌ ±0 
1 176 runs  ±0  1 175 ✅ ±0  1 💤 ±0  0 ❌ ±0 

Results for commit 1722a5c. ± Comparison against base commit 53d4149.