[swift6] Run the sample tests against https://petstore.swagger.io

[spigo]

The Bitrise swift6 job currently fails on every PR that touches the swift6 samples (e.g. #25188 to #25194). The test apps call http://petstore.swagger.io:80/v2, the spec's host, and petstore.swagger.io now answers plain http with a 302 to https://petstore.swagger.io:443/.... On the iOS 26 simulator used by CI, URLSession re-sends the redirected POST as a GET, so addPet and placeOrder fail with 405 and the dependent get/delete tests fail with 404 or time out. That's 14 failures in alamofireLibrary, and the script stops there, so the other samples' tests never run.

This sets PetstoreClientAPIConfiguration.shared.basePath = "https://petstore.swagger.io/v2" in didFinishLaunching of the nine swift6 test host apps run by swift6_test_all.sh. Specs and generated samples are unchanged: default uses the shared 2.0 petstore spec, and the Swift-specific spec also feeds the swift5 samples, so changing the host there would touch many unrelated samples.

Checked: all nine test projects build with build-for-testing, and addPet, getPetById, placeOrder and deletePet succeed against https://petstore.swagger.io/v2 with the generated client. macOS 27's URLSession upgrades the http request to https on its own, which is why the failure doesn't reproduce on newer OS versions.

PR checklist

• Read the contribution guidelines.
• No generator or template change, so no sample regeneration is needed; only the hand-written test apps change.
• @mention the technical committee: @jgavris @ehyche @Edubits @jaz-ah @4brunu @dydus0x14

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Summary by cubic

Fixes the Bitrise swift6 CI job, which fails on every PR that touches the swift6 samples. The test apps call http://petstore.swagger.io:80/v2, the spec's host, and petstore.swagger.io now answers plain http with a 302 to https://petstore.swagger.io:443/.... On the iOS 26 simulator used by CI, URLSession re-sends the redirected POST as a GET, so addPet and placeOrder fail with 405 and the dependent get/delete tests fail with 404 or time out.

Sets PetstoreClientAPIConfiguration.shared.basePath to https://petstore.swagger.io/v2 in didFinishLaunching of the nine swift6 test host apps run by swift6_test_all.sh, adding the missing PetstoreClient import where needed. Specs and generated samples are unchanged. macOS 27's URLSession upgrades the http request to https on its own, which is why the failure doesn't reproduce on newer OS versions.

^{Written for commit 385c872. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 9 files

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