Download url parser discards port

[f0x52]

After being quite confused why the OTA library could not connect to my storage server, I realized from this code that the port I specified (8080) wasn't being used at all.

https://github.com/arduino-libraries/Arduino_ESP32_OTA/blob/main/src/Arduino_ESP32_OTA.cpp#L119 always sets port to 80 for http and 443 for https, and the URI parser seems to not handle : at all (https://github.com/arduino-libraries/Arduino_ESP32_OTA/blob/main/src/decompress/utility.cpp#L88).

That last function is quite confusing, so no easy fix PR from my side, alas.