adding 8.2 + 8.3 to build matrix

[brettmc]

8.3 is in RC, so add it to the matrix.
bump 8.2 to non-experimental, which should have happened some time ago.

[codecov]

Codecov Report

Merging #1107 (d9f8023) into main (197a7a4) will increase coverage by 0.45%.
Report is 4 commits behind head on main.
The diff coverage is 72.32%.

❗ Current head d9f8023 differs from pull request most recent head 25de72c. Consider uploading reports for the commit 25de72c to get more accurate results

@@             Coverage Diff              @@
##               main    #1107      +/-   ##
============================================
+ Coverage     83.05%   83.50%   +0.45%     
- Complexity     2151     2160       +9     
============================================
  Files           278      279       +1     
  Lines          6119     6136      +17     
============================================
+ Hits           5082     5124      +42     
+ Misses         1037     1012      -25     

Flag	Coverage Δ
7.4	82.12% <72.32%> (+0.45%)	⬆️
8.0	83.43% <72.32%> (+0.45%)	⬆️
8.1	83.57% <72.32%> (+0.45%)	⬆️
8.2	83.57% <72.32%> (+0.45%)	⬆️
8.3	83.57% <72.32%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/API/Behavior/Internal/LogWriter/Formatter.php	100.00% <100.00%> (ø)
src/API/Behavior/LogsMessagesTrait.php	100.00% <100.00%> (ø)
src/API/Globals.php	94.28% <100.00%> (-0.59%)	⬇️
src/API/Instrumentation/Configurator.php	100.00% <ø> (ø)
src/API/Instrumentation/ContextKeys.php	100.00% <ø> (ø)
src/Contrib/Otlp/OtlpHttpTransportFactory.php	75.00% <ø> (ø)
...ommon/Adapter/HttpDiscovery/DependencyResolver.php	100.00% <ø> (+8.33%)	⬆️
src/SDK/Common/Export/Http/PsrTransportFactory.php	78.26% <100.00%> (ø)
src/SDK/Common/Export/Http/PsrUtils.php	92.42% <100.00%> (+1.04%)	⬆️
src/SDK/SdkAutoloader.php	93.75% <ø> (-0.19%)	⬇️
... and 7 more

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[brettmc]

converting back to draft, to be continued after GA and when 8.3 is closer to GA

[pdelewski]

converting back to draft, to be continued after GA and when 8.3 is closer to GA

I was thinking about that too, otherwise we will have failing tests.