Update dependency grafana/grafana-polystat-panel to v2.1.0

This MR contains the following updates:

Package	Type	Update	Change
grafana/grafana-polystat-panel	ironbank-github	minor	v2.0.9 -> v2.1.0

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Release Notes

grafana/grafana-polystat-panel

v2.1.0

Compare Source

• Fixes tooltips being left behind when mousing out of panel in G10
• Switched to react-tooltips vs tippyjs and leveraging UI Portal component
• Performance improved due to dynamic generation of tooltips vs pre-creation
• Tooltip now follows theme

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