Running on Debian - dash doesn't support double bracket

[mhanor]

Please adjust the scripts so it doesn't throw errors like [[: not found
On my Debian machine, /bin/sh is a link to dash, not bash

Thank you.

$ ./use-standalone-widevine.sh
./fetch-latest-widevine.sh: 13: [[: not found
/usr/bin/wget
/usr/bin/curl
./fetch-latest-widevine.sh: 19: [[: not found
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 133 100 133 0 0 621 0 --:--:-- --:--:-- --:--:-- 618
./fetch-latest-widevine.sh: 25: [[: not found
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 6561k 100 6561k 0 0 9163k 0 --:--:-- --:--:-- --:--:-- 9163k

[baptx]

I got this error too on Debian 12 but I use Bash (not Dash).
However even with the errors, the installation was successful (because the double brackets from the script are just used for error handling) and I got DRM working in Chromium when testing on https://integration.widevine.com/player.