Upgrade `Basic` Azure Load Balancer to `Standard` by September 2025

[schnerring]

See official deprecation announcement

https://azure.microsoft.com/en-us/updates/azure-basic-load-balancer-will-be-retired-on-30-september-2025-upgrade-to-standard-load-balancer/

By extension, this also affects associated Basic SKU public IP addresses which are also deprecated at the same time:

https://azure.microsoft.com/en-us/updates/upgrade-to-standard-sku-public-ip-addresses-in-azure-by-30-september-2025-basic-sku-will-be-retired/