docs: update lustre version in manifest
% <-- begin entry for lustre-client-ohpc
\multirow{2}{*}{lustre-client-ohpc} &
-\multirow{2}{*}{2.12.5} &
+\multirow{2}{*}{2.12.6} &
Lustre File System. \newline { \color{logoblue} \url{https://wiki.whamcloud.com}}
\\ \hline
% <-- end entry for lustre-client-ohpc
