Doc:Add Ruby 3.2 support to our compatibility matrix

[marcotc]

This PR updates our public documentation to reflect our support for the latest stable version of Ruby: 3.2.

[codecov-commenter]

Codecov Report

Merging #2971 (ec5cac0) into master (4890f92) will increase coverage by 0.10%.
The diff coverage is 98.45%.

@@            Coverage Diff             @@
##           master    #2971      +/-   ##
==========================================
+ Coverage   97.96%   98.07%   +0.10%     
==========================================
  Files        1287     1301      +14     
  Lines       71025    71923     +898     
  Branches     3285     3306      +21     
==========================================
+ Hits        69581    70538     +957     
+ Misses       1444     1385      -59     

Impacted Files	Coverage Δ
lib/datadog/appsec/contrib/devise/patcher.rb	69.56% <ø> (-2.44%)	⬇️
lib/datadog/core/backport.rb	68.42% <60.00%> (-6.58%)	⬇️
lib/datadog/core/utils/safe_dup.rb	83.33% <77.77%> (+4.38%)	⬆️
lib/datadog/tracing/contrib/opensearch/quantize.rb	94.44% <94.44%> (ø)
lib/datadog/tracing/contrib/opensearch/patcher.rb	96.92% <96.92%> (ø)
...datadog/tracing/contrib/opensearch/patcher_spec.rb	99.23% <99.23%> (ø)
lib/datadog/appsec/contrib/devise/event.rb	100.00% <100.00%> (ø)
...ec/contrib/devise/patcher/authenticatable_patch.rb	100.00% <100.00%> (+75.67%)	⬆️
...ib/devise/patcher/registration_controller_patch.rb	100.00% <100.00%> (+68.96%)	⬆️
lib/datadog/core/telemetry/http/transport.rb	100.00% <100.00%> (ø)
... and 22 more

... and 7 files with indirect coverage changes

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