fixes https://github.com/jasp-stats/INTERNAL-jasp/issues/803 (#4696)

NOTICE.txt

@@ -3,13 +3,18 @@ is a list of these components (full copies of the license agreements
 used by these components are included below):
 
 - R Logo (CC-BY-SA 4.0) 
-
-
+- Qt (LGPL v2.1)
 
 
 R Logo
 ---------------------
 
 R logo is distributed under CC-BY-SA 4.0 license, https://creativecommons.org/licenses/by-sa/4.0/, with the following modification.
 
-> The color of the logo has been slightly adjust to improve its contrast in the dark mode.
+> The color of the logo has been slightly adjust to improve its contrast in the dark mode.
+
+
+Open Source Qt
+---------------------
+
+Qt framework is distributed under LGPL v2.1, https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html.