[PowerShell] Tidy up CMake installation. #8216

Job	Run time
C++ GCC 11 (Ubuntu 24.04)	10m 20s
C++ GCC 12 (Ubuntu 24.04)	11m 13s
C++ Clang 19 debug build	10m 44s
C++ Clang 9 (Ubuntu 20.04)	11m 4s
C++ GCC 13 (Ubuntu 24.04)	11m 13s
C++ Clang 13 (Ubuntu 24.04)	11m 9s
C++ Clang 10 (Ubuntu 20.04)	11m 13s
C++ GCC 14 (Ubuntu 24.04)	11m 8s
C++ Clang 14 (Ubuntu 24.04)	10m 50s
C++ Clang 11 (Ubuntu 20.04)	11m 13s
C++ GCC 6 (Ubuntu 20.04)	10m 34s
C++ Clang 15 (Ubuntu 24.04)	10m 39s
C++ Clang 12 (Ubuntu 20.04)	11m 13s
C++ GCC 7 (Ubuntu 20.04)	9m 52s
C++ Clang 16 (Ubuntu 24.04)	10m 34s
C++ Rocky 8 (10)	11m 11s
C++ GCC 8 (Ubuntu 20.04)	10m 8s
C++ Clang 17 (Ubuntu 24.04)	10m 46s
C++ GCC 9 (Ubuntu 20.04)	10m 49s
C++ MSVC (Windows)	10m 57s
C++ Clang 18 (Ubuntu 24.04)	10m 46s
C++ GCC 10 (Ubuntu 20.04)	10m 18s
C++ Clang 19 (Ubuntu 24.04)	10m 41s
C++ Xcode (macOS)	11m 12s
Java 17 (ubuntu-24.04)	5m 10s
Java Topology Tests (JDK 17, ubuntu-24.04)	2m 52s
Java 17 (windows-latest)	6m 16s
Java 17 (macos-latest)	7m 9s
Java 21 (ubuntu-24.04)	5m 0s
Java 21 (windows-latest)	8m 13s
Java 21 (macos-latest)	7m 24s
Java 23 (ubuntu-24.04)	5m 10s
Java 23 (windows-latest)	8m 26s
Java 23 (macos-latest)	7m 10s
	5h 22m 37s

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