Update the runtime versions in CMake files to use the central version #83936
Description
Description
Update all of these files to use SWIFT_VERSION_MAJOR and SWIFT_VERSION_MINOR compared to hardcoding the version.
Runtimes/Core/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Overlay/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Supplemental/Differentiation/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Supplemental/Observation/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Supplemental/StringProcessing/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Supplemental/Synchronization/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Runtimes/Supplemental/Volatile/CMakeLists.txt: VERSION 6.1.0${BUILD_NUMBER}) Additional information
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