Update FreeBSD image to 13.3

[seladb]

This is not mentioned in CirrusCI documentation (yet), but FreeBSD 13.2 image no longer exists on Google Cloud. The minimum supported version is 13.3:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.60%. Comparing base (b454222) to head (c5ec7ef).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1423   +/-   ##
=======================================
  Coverage   82.60%   82.60%           
=======================================
  Files         167      167           
  Lines       21619    21619           
  Branches     8193     8193           
=======================================
  Hits        17858    17858           
- Misses       3034     3044   +10     
+ Partials      727      717   -10     

Flag	Coverage Δ
alpine317	72.64% <ø> (ø)
fedora37	72.64% <ø> (ø)
macos-12	61.59% <ø> (ø)
macos-13	60.61% <ø> (ø)
macos-14	60.61% <ø> (+<0.01%)	⬆️
macos-ventura	61.69% <ø> (?)
mingw32	70.52% <ø> (+0.02%)	⬆️
mingw64	70.54% <ø> (ø)
npcap	83.71% <ø> (ø)
rhel93	72.64% <ø> (-0.05%)	⬇️
ubuntu1804	75.03% <ø> (-0.01%)	⬇️
ubuntu2004	73.57% <ø> (-0.04%)	⬇️
ubuntu2204	72.49% <ø> (ø)
ubuntu2204-icpx	59.21% <ø> (ø)
unittest	82.60% <ø> (ø)
windows-2019	83.74% <ø> (ø)
windows-2022	83.74% <ø> (ø)
winpcap	83.71% <ø> (ø)
xdp	59.79% <ø> (ø)
zstd	73.96% <ø> (?)

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