docs: add sha256 checksums for 11.1.1
docs: add sha256 checksums for 11.1.1

Signed-off-by: Emil Velikov <f20878473f414da183da19ee25c8722cc1d711e4@collabora.com>
(cherry picked from commit 4b2d9f29e9b75cbbeb76ccf753a256e11f07ee1a)

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler