deps: bump vllm-tgis-adapter to 0.6.0

[dtrifiro]

Changelog: https://github.com/opendatahub-io/vllm-tgis-adapter/releases/tag/0.6.0

[openshift-ci]

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[dtrifiro]

/retest

[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	cd83e62	link	true	/test smoke-test
ci/prow/images	cd83e62	link	true	/test images

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