deps: bump vllm-tgis-adapter to 0.6.2

[dtrifiro]

Changelog:

• https://github.com/opendatahub-io/vllm-tgis-adapter/releases/tag/0.6.2
• https://github.com/opendatahub-io/vllm-tgis-adapter/releases/tag/0.6.1

[openshift-ci]

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[openshift-ci]

@dtrifiro: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/smoke-test	8f9196f	link	true	/test smoke-test
ci/prow/cuda-pr-image-mirror	8f9196f	link	true	/test cuda-pr-image-mirror
ci/prow/images	8f9196f	link	true	/test images

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