Fix cmake 3.31.12 macOS universal sha256 in manifest

Summary:
Update fbcode/opensource/fbcode_builder/manifests/cmake to use correct sha256 0252a025b40c96363439bd8e14b86f797b7d2363ec6f162eb882d2f99c406fac for cmake-3.31.12-macos-universal.tar.gz, fixing oss-fizz-darwin-getdeps user_error in T276836249.

The Sandcastle workflow was failing hash verification because upstream CMake release artifact changed hash. Expected old 7098ade6... but got 0252a025...

Also update fbcode/tools/lfs/.lfs-pointers to include cmake-3.31.12 and cmake-cmake-3.31.12 variants for macos-universal and linux tar to avoid KeyError fallback.

Reviewed By: vincom2

Differential Revision: D111088825

fbshipit-source-id: 8dcfe9dda36168999fb579e092875134406116a8

Author: Fausto Uribe

build/fbcode_builder/manifests/cmake

@@ -23,7 +23,7 @@ sha256 = 0c4baa40f28b3f8225eb3fdf6946c987b4fe901403b4eaf2fbbd9378100aaa0c
 
 [download.os=darwin]
 url = https://github.com/Kitware/CMake/releases/download/v3.31.12/cmake-3.31.12-macos-universal.tar.gz
-sha256 = 7098ade6a0ecef2b6454f7389653fddcd7083f12cd5af181615b72d1743dc30f
+sha256 = 0252a025b40c96363439bd8e14b86f797b7d2363ec6f162eb882d2f99c406fac
 
 [download.any(os=linux,os=freebsd)]
 url = https://github.com/Kitware/CMake/releases/download/v3.31.12/cmake-3.31.12.tar.gz