When migrating from operator-sdk v1.17.0 to v1.18.0, generate bundle now looks for a deployment with the control-plane: controller-manager label pair. The main container must also be named manager.
Previously, developers were free to rename the main container or drop the "control-plane" label (or it was never generated in the first place).
This was not documented in the migration guide [1].
[1] https://sdk.operatorframework.io/docs/upgrading-sdk-version/v1.18.0/