Update Minio Operator Ingress NetPol

Can't seem to get the label templates to work since those are set in the subchart and this netpol lives in the main chart. Hardcoding based on the name should be safe:

• Label: https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/minio/-/blob/main/chart/templates/_helpers.tpl#L45
• Template for that: https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/minio/-/blob/main/chart/templates/_helpers.tpl#L4
• Chart name, which can't be overridden: https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/minio/-/blob/main/chart/Chart.yaml#L3 (note the above template truncates/strips everything after - so we are left with minio