I used this one

https://www.amazon.com/Power-LampCharger-Adapter-Charging-Station/dp/B07P9SDHRY

but I don't see it on amazon.ca

this and a cheap usb block would work, unless too tall:

https://www.amazon.ca/DiCUNO-Outlet-Adapter-Polarized-Splitter/dp/B08QMYWKSR

or a whole new porch light with outlet

https://www.amazon.ca/Addington-Park-31847-Outdoor-Sconce/dp/B082F1GGCW