Updates require for patch 2.12

[lan23333]

Reworked map has its grid coordinates changed and heights are different now

"Updated a few maps with an initial implementation of a new landscape shader, which allows for greatly improved landscape detail. Updated landscapes are currently found on Manic-5, Mestia, Gorodok, Yehorivka, and Anvil. "

[wassti]

Most of this is done already :) https://github.com/Endebert/squadmc-maps/pull/37

I'll double check mestia tomorrow (and include it in the above pull request if it needs updating)