[www-scripts] Clang Attribute Doc Update: ERROR

[root via www-scripts]

UPDATING LLVM SOURCES
HEAD is now at 45d785e Revert rGb97093e520036f8 - "[InstCombine] matchFunnelShift - fold or(shl(a,x),lshr(b,sub(bw,x))) -> fshl(a,b,x) iff x < bw"
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   45d785e..54434dc  master     -> origin/master
First, rewinding head to replay your work on top of it...
Fast-forwarded master to 54434dc4dce9d59c4d6cebfd87e5f67e2966573b.
CMake Error at CMakeLists.txt:3 (cmake_minimum_required):
  CMake 3.13.4 or higher is required.  You are running version 3.7.1


-- Configuring incomplete, errors occurred!