Update simdjson GIT_TAG

[taylorplewe]

My development environment:

• OS: Debian 12 (bookworm)
• cmake version: 3.25.1

Upon checking out the latest main branch (cd48dbac3d9aeb283f293aec8e12b13abfff2b97) and running:

cmake -B build

I received the following build error:

[ 11%] Performing download step (git clone) for 'simdjson-populate'
Cloning into 'simdjson-src'...
fatal: reference is not a tree: 182eac0092aa587b6b2b3718da897d2c40642360
CMake Error at simdjson-subbuild/simdjson-populate-prefix/tmp/simdjson-populate-gitclone.cmake:49 (message):
  Failed to checkout tag: '182eac0092aa587b6b2b3718da897d2c40642360'

Updating the tag to simdjson's latest master commit solved the problem, I was able to build just fine.