Upgrade CPM

[baconpaul]

I got this flagged warning

-- CPM: Adding package vst3sdk@3.7.6 (v3.7.6_build_18)
CMake Warning (dev) at /usr/local/share/cmake-3.30/Modules/FetchContent.cmake:1953 (message):
  Calling FetchContent_Populate(vst3sdk) is deprecated, call
  FetchContent_MakeAvailable(vst3sdk) instead.  Policy CMP0169 can be set to
  OLD to allow FetchContent_Populate(vst3sdk) to be called directly for now,
  but the ability to call it with declared details will be removed completely
  in a future version.
Call Stack (most recent call first):
  build/cmake/CPM_0.38.6.cmake:1004 (FetchContent_Populate)
  build/cmake/CPM_0.38.6.cmake:798 (cpm_fetch_package)
  libs/clap/clap-wrapper/cmake/base_sdks.cmake:103 (CPMAddPackage)
  libs/clap/clap-wrapper/cmake/wrap_vst3.cmake:51 (guarantee_vst3sdk)
  clients/clap-first/CMakeLists.txt:35 (target_add_vst3_wrapper)
This warning is for project developers.  Use -Wno-dev to suppress it.

so upgrade CPM

which is now on 0.40.2

[mthierman]

I guess I mentioned this in the PR but I used the wrong keyword, this can be closed now.

[baconpaul]

Oh it will close when next hits main. GitHub closes when an issue hits the default branch automatically if you use fixes or closes