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<https://github.com/IHP-GmbH/IHP-Open-PDK/issues/167|#167 Fix pin labels in `a221oi_1` cell>
Issue created by <https://github.com/sergeiandreyev|sergeiandreyev>
*Expected Behavior*

Pin labels in stdcells should be drawn on `Metal1.text` layer

*Actual Behavior*

Signal pin labels in `a221oi_1` cell are drawn on `Metal1.label` layer, PG pin labels are drawn in `Metal1.pin` layer

*Steps to Reproduce the Problem*

1. Open `a221oi_1` layout
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>