docs: add sha256 checksums for 11.0.3
docs: add sha256 checksums for 11.0.3

Signed-off-by: Emil Velikov <f20878473f414da183da19ee25c8722cc1d711e4@collabora.com>
(cherry picked from commit b4bfea0094d0037b1f66f3437e44e333f2f0c3f6)

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler