b1b8d5b ("package/sdl2_mixer: bump version to 2.6.3") forgot to update
the hash of the license file.
In 2021 the file was renamed from COPYING.txt to LICENSE.txt in two
commits ([0] and [1]). The copyright year was subsequently updated for
2022 [2] and 2023 [3].
License is still Zlib - no changes there.
[0]: 0f84f24264
[1]: 371bf15759
[2]: 3f5a0502e0
[3]: 6fdd4d469b
Fixes:
- http://autobuild.buildroot.net/results/302cbd0adc2c6190d8923b9449e26a3c519d2326
Signed-off-by: Daniel Lang <dalang@gmx.at>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>