Typhoeus support only works then the faraday-typhoeus package is installed.
https://github.com/typhoeus/typhoeus/issues/709

--- a/lib/puppet_forge/connection.rb	2023-09-09 09:02:03.981164238 +0200
+++ b/lib/puppet_forge/connection.rb	2023-09-09 09:03:56.506144279 +0200
@@ -82,7 +82,7 @@
 
       begin
         # Use Typhoeus if available.
-        Gem::Specification.find_by_name('typhoeus', '~> 1.4')
+        Gem::Specification.find_by_name('typhoeus', '~> 1.4') && Gem::Specification.find_by_name('faraday-typhoeus')
         require 'typhoeus/adapters/faraday'
         adapter = :typhoeus
       rescue Gem::LoadError