Fix ruby httpx test

[HoneyryderChuck]

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[wing328]

thanks for the PR. tests passed locally:

Finished in 1.79 seconds (files took 1.57 seconds to load)
295 examples, 0 failures, 3 pending

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  33.184 s
[INFO] Finished at: 2023-10-10T11:31:04+08:00
[INFO] ------------------------------------------------------------------------
[INFO] 3 goals, 3 executed
[INFO] 
[INFO] Publishing build scan...
[INFO] https://ge.openapi-generator.tech/s/pc47jxadb6tki
[INFO]