chore: update metaflow-dev metadata-service to 2.6.1

[saikonen]

Update metadata-service to 2.6.1 in order to support pagination in the dev stack

[greptile-apps]

Greptile Summary

This PR updates the metadata service used by the Tilt development stack from 2.5.0 to 2.6.1, aligning it with the client’s minimum supported version for corrected cursor pagination.

• Retains the existing Helm chart, database configuration, probes, and resource settings.
• Changes only the metadata-service container image tag.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The version bump aligns with the client’s 2.6.1 pagination capability gate, while the existing service and database configuration remains unchanged and internally consistent.

Important Files Changed

Filename	Overview
devtools/tilt/metadata_service.tiltfile	Updates the development metadata-service image to 2.6.1 without changing its deployment configuration.

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