chore: make grafanaDependency prerelease-inclusive

[tolzhabayev]

grafana-com PR #17309 made the plugins publish API reject Grafana-owned plugins whose grafanaDependency lower bound isn't prerelease-inclusive, so the next publish of this plugin would fail.

This updates the range from >=11.6.7 to >=11.6.7-0 so prerelease Grafana builds are matched and publishing keeps working. No behavior change for released Grafana versions.

Ref: https://github.com/grafana/grafana-com/pull/17309

[Copilot]

Pull request overview

Updates this plugin’s declared Grafana compatibility range to remain publishable under the updated grafana-com validation rules by making the lower bound prerelease-inclusive (so prerelease builds like 11.6.7-xxx satisfy the range), without changing behavior for stable Grafana releases.

Changes:

• Adjust dependencies.grafanaDependency from >=11.6.7 to >=11.6.7-0 in src/plugin.json.

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[zoltanbedi]

@tolzhabayev please sign the cla.