[SymForce-External] Bump skymarshal required cmake version to 3.19

Import of #127

Fixes #122

ORIGINAL_AUTHOR = Aaron Miller <[email protected]>
GitOrigin-RevId: a99a6e25ac2191b2a795de34f2eefefe7acb0e18

Author: aaron-skydio

README.md

@@ -92,7 +92,7 @@ pip install -r requirements.txt
 
 Install CMake if you don't already have a recent version:
 ```
-pip install "cmake>=3.17"
+pip install "cmake>=3.19"
 ```
 
 Build SymForce (requires C++14 or later):

third_party/skymarshal/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.17)  # For CMAKE_CURRENT_FUNCTION_LIST_DIR
+cmake_minimum_required(VERSION 3.19)  # For interface library headers
 project(skymarshal)
 
 add_library(skymarshal_core INTERFACE include/lcm/lcm_coretypes.h)