docs: add sha256 checksums for 10.6.6
docs: add sha256 checksums for 10.6.6

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
(cherry picked from commit e3e2a3e0e581da39dcd9268951edb52f68916940)

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler