JIT

GH-136895: Update JIT builds to use LLVM 21 #44

Job	Run time
aarch64-apple-darwin/clang (Debug)	16m 54s
i686-pc-windows-msvc/msvc (Release)	5m 13s
x86_64-pc-windows-msvc/msvc (Debug)	5m 21s
JIT with tail calling interpreter	3m 0s
i686-pc-windows-msvc/msvc (Debug)	5m 44s
Interpreter (Debug)	9m 35s
JIT without optimizations (Debug)	2m 12s
aarch64-pc-windows-msvc/msvc (Release)	7m 23s
aarch64-unknown-linux-gnu/gcc (Release)	6m 45s
x86_64-apple-darwin/clang (Debug)	17m 55s
x86_64-apple-darwin/clang (Release)	16m 58s
aarch64-apple-darwin/clang (Release)	12m 6s
x86_64-unknown-linux-gnu/gcc (Debug)	11m 51s
x86_64-pc-windows-msvc/msvc (Release)	5m 7s
x86_64-unknown-linux-gnu/gcc (Release)	7m 23s
aarch64-pc-windows-msvc/msvc (Debug)	6m 52s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 39s
	2h 27m 58s

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