Migrate to pnpm #26494

Job	Run time
Cancel Previous Runs	4s
Engine (GraalVM CE) (windows, x86_64)	27m 9s
Engine (GraalVM CE) (linux, x86_64)	31m 11s
Engine (GraalVM CE) (macos, x86_64)	1h 14m 20s
JVM Tests (GraalVM CE) (linux, x86_64)	31m 52s
JVM Tests (GraalVM CE) (windows, x86_64)	52m 43s
Standard Library Tests (GraalVM CE) (linux, x86_64)	30m 43s
JVM Tests (GraalVM CE) (macos, x86_64)	1h 19m 45s
Standard Library Tests (GraalVM CE) (macos, x86_64)	39m 15s
Standard Library Tests (GraalVM CE) (windows, x86_64)	32m 7s
Verify License Packages (linux, x86_64)	2m 47s
	6h 41m 56s

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