Updated openai agents samples to work with latest SDK. #788

Job	Run time
build-lint-test (3.9, macos-arm)	14s
build-lint-test (3.9, windows-latest)	19s
build-lint-test (3.12, macos-intel)	11s
build-lint-test (3.9, macos-intel)	12s
build-lint-test (3.9, ubuntu-latest)	13s
build-lint-test (3.12, macos-arm)	18s
build-lint-test (3.12, ubuntu-latest)	16s
build-lint-test (3.12, windows-latest)	17s
	2m 0s

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