CI: update LSP.jl.yml #2

Job	Run time
Test with `JETLS_DEBUG_LOWERING = true`	27s
Test with `JETLS_DEV_MODE = true`	14m 38s
Test jetls executable	6m 13s
Julia 1 - macos-latest - x64	11m 57s
Julia 1.12 - ubuntu-latest - x64	9m 14s
Julia 1 - ubuntu-latest - x64	15m 2s
Julia nightly - ubuntu-latest - x64	3m 36s
Test with `JULIA_NUM_THREADS = 4,2`	9m 5s
	1h 10m 12s

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