Update dependency grafana/grafana-polystat-panel to v2.0.3

This MR contains the following updates:

Package	Type	Update	Change
grafana/grafana-polystat-panel	ironbank-github	patch	v2.0.2 -> v2.0.3

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Release Notes

grafana/grafana-polystat-panel

v2.0.3

Compare Source

• Fix for Issue #​241 (Global Threshold Migration)

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