Revert "Reland "[CMake] Bumps minimum version to 3.20.0.""

This reverts commit a72165e5df59032cdd54dcb18155f2630d73abd1.

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GitOrigin-RevId: d0398d3593ba030db83b888370f8f0f3025c296e
2 files changed
tree: e4063ce8e11db3b226b2a3033f14baa3055926cd
  1. cmake/
  2. docs/
  3. include/
  4. src/
  5. test/
  6. .clang-format
  7. CMakeLists.txt
  8. LICENSE.TXT