prjtrellis: update test url to resolve ssl issue

[daeho-ro]

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Found from

• python-gdbm@3.13 python-tk@3.13 python@3.13 python-freethreading 3.13.6 #232580
• https://github.com/Homebrew/homebrew-core/actions/runs/16787228905/job/47664027789?pr=232580