Allow Symfony 6.x

[yoanm]

No description provided.

[codecov]

Codecov Report

Merging #91 (dbb25e6) into master (dc9ff3a) will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##              master       #91   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity        41        41           
===========================================
  Files              7         7           
  Lines            179       179           
===========================================
  Hits             179       179           

Flag	Coverage Δ
functional-tests	100.00% <100.00%> (ø)
php-8.2	100.00% <100.00%> (ø)
sf-4.4	99.36% <100.00%> (ø)
sf-5.4	100.00% <100.00%> (ø)
sf-6.0	100.00% <100.00%> (?)
unit-tests	0.00% <0.00%> (ø)

Impacted Files	Coverage Δ
...DependencyInjection/JsonRpcHttpServerExtension.php	100.00% <100.00%> (ø)

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