Migrate to pnpm #26482

Job	Run time
Engine (GraalVM CE) (linux, x86_64)	30m 3s
Cancel Previous Runs	2s
Engine (GraalVM CE) (macos, x86_64)	35m 25s
Engine (GraalVM CE) (windows, x86_64)	31m 49s
JVM Tests (GraalVM CE) (linux, x86_64)	31m 4s
JVM Tests (GraalVM CE) (macos, x86_64)	35m 19s
Standard Library Tests (GraalVM CE) (linux, x86_64)	30m 11s
Standard Library Tests (GraalVM CE) (macos, x86_64)	35m 29s
JVM Tests (GraalVM CE) (windows, x86_64)	34m 36s
Standard Library Tests (GraalVM CE) (windows, x86_64)	29m 16s
Verify License Packages (linux, x86_64)	3m 18s
	4h 56m 32s

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