Update required CMake version

[tdauth]

CMake Deprecation Warning at CMakeLists.txt:2 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of

old repo but still useful but update the CMake version which is required.

[tdauth]

It says this when I remove the check:

CMake Warning (dev) in CMakeLists.txt:
  No cmake_minimum_required command is present.  A line of code such as

    cmake_minimum_required(VERSION 3.22)

[tdauth]

and I get this compile error now:

/FreeImage/OpenEXR/Imath/ImathVec.h:220:41: error: ISO C++17 does not allow dynamic exception specifications
  220 |     const Vec2 &        normalizeExc () throw (Iex::MathExc);
``