Update eThekwini Municipality schedules

[beyarkay]

A new schedule has been announced

https://www.durban.gov.za/pages/residents/load-shedding

Also this website has some lat/long data which could be interesting to integrate in the future: https://ethekwini.maps.arcgis.com/apps/InformationLookup/index.html?appid=d23b6981db474174a4944cde8837623d

[beyarkay]

dd49e7c should add the new schedules, although area_metadata.yaml hasn't been updated with the new suburb names for each of the blocks yet.

[beyarkay]

And hopefully b551c0c will successfully add the suburb names to area_metadata

[beyarkay]

🎉