Minor CMAKE issues

[eniv]

CMAKE find_package QUIET attribute is not respected by cmake_modules/FindJsoncpp.cmake
More specifically, it is violated by message(STATUS "jsoncpp version:" ${jsoncpp_ver})
This is very minor.

[eniv]

Changed the title to minor CMAKE issues.
I also ran into this if using CMAKE 3.31.0 and later:

CMake Deprecation Warning at build/ext/drogon/build/install/lib/cmake/Drogon/ParseAndAddDrogonTests.cmake:20 (cmake_minimum_required):
  Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell

[eniv]

Would it be possible to integrate the fixes to those issues in the next version such that integrating drogon will not pollute CMAKE's output?

[an-tao]

Hi, thanks for your feedback, would you like to submit a PR to fix this?

[eniv]

Sure: #2213
I also included a fix to #2208 in a separate commit

[eniv]

Fixed in #2213