Update module github.com/overmindtech/discovery to v0.27.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/overmindtech/discovery	v0.27.2 -> v0.27.3

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Release Notes

overmindtech/discovery (github.com/overmindtech/discovery)

v0.27.3

Compare Source

What's Changed

• Ensure that we receive spans from hanging callSources(); add a dedicated HealthCheck() to capture default metrics by @​DavidS-ovm in https://github.com/overmindtech/discovery/pull/280
• Fix which span to hangcheck by @​DavidS-ovm in https://github.com/overmindtech/discovery/pull/281

Full Changelog: overmindtech/discovery@v0.27.2...v0.27.3

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