Fix build when using latest arduino-esp32 master due to IDF update

[blackhack]

Latest idf update on arduino-esp32 (espressif/arduino-esp32@a618fc1) causes a linker failure.

This change was also applied to the original arduino-esp32 webserver.

Linking everything together...
d:/david/development/arduino/sketch/hardware/espressif/esp32/tools/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: C:\Users\david\AppData\Local\Temp\arduino_build_567038\libraries\ESPAsyncWebServer\WebAuthentication.cpp.o:(.literal._ZL6getMD5PhtPc+0x4): undefined reference to `mbedtls_md5_starts'
d:/david/development/arduino/sketch/hardware/espressif/esp32/tools/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: C:\Users\david\AppData\Local\Temp\arduino_build_567038\libraries\ESPAsyncWebServer\WebAuthentication.cpp.o: in function `getMD5(unsigned char*, unsigned short, char*)':
D:\david\Development\Arduino\Sketch\libraries\ESPAsyncWebServer\src/WebAuthentication.cpp:73: undefined reference to `mbedtls_md5_starts'
collect2.exe: error: ld returned 1 exit status
exit status 1
Error compiling for board ESP32 Dev Module.

[dominikawysocka]

Save my day! :) Merge, working with ArduinoIDE with ESP32 Dev Module board 👍

[1e1]

Great fix!
I guess there is a similar issue for ESP8266.
As soon as the sketch uses onSslFileRequest, the compilation fails:

collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board Generic ESP8266 Module.

[CelliesProjects]

Hit my head on this issue too: espressif/arduino-esp32/issues/5457

@blackhack Is there any chance you get this merged in https://github.com/ul-gh/ESPAsyncWebServer/tree/dev ?
I have not seen a single merge by me-no-dev in this repo for a very long time.

[CelliesProjects]

Spoke too soon.
@me-no-dev Thanks!