feat: add PHP 8.3 support

[bduranleau-nr]

Adds non-OAPI PHP 8.3 support to the agent.

[CRC-Mismatch]

I guess someone with permissions needs to manually run the _make-agent workflow for both amd64 and arm64 platforms, then re-run the checks 😶

Either that, or (judging by no history being shown) someone with access to the private DockerHub repo needs to build and push the 4 new tags before rerunning the checks...

Even if almost all of them would fail, I think it would be really interesting to see the depth of "how much work" it will still take to get it working - it would also give a nice way for any seasoned developer to estimate how far we are from PHP 8.3 support. Also, maybe with more inputs publicly available on it, more people could join in and (knowing what's failing) speed up the process 🤷‍♂️

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c8fe3a8) 78.46% compared to head (b74483d) 78.47%.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #797   +/-   ##
=======================================
  Coverage   78.46%   78.47%           
=======================================
  Files         189      189           
  Lines       26335    26335           
=======================================
+ Hits        20665    20666    +1     
+ Misses       5670     5669    -1     

Flag	Coverage Δ
agent-for-php-7.0	77.22% <ø> (ø)
agent-for-php-7.1	76.94% <ø> (ø)
agent-for-php-7.2	77.50% <ø> (ø)
agent-for-php-7.3	77.52% <ø> (ø)
agent-for-php-7.4	77.31% <ø> (+<0.01%)	⬆️
agent-for-php-8.0	77.40% <ø> (+<0.01%)	⬆️
agent-for-php-8.1	77.36% <ø> (+<0.01%)	⬆️
agent-for-php-8.2	77.15% <ø> (+<0.01%)	⬆️
agent-for-php-8.3	77.15% <ø> (?)

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[lavarou]

I think PHP 8.3 needs to be added here as well.

[bduranleau-nr]

I think PHP 8.3 needs to be added here as well.

@lavarou Fixed in a3741c7