stdlib: Bump LinearAlgebra to the BLAS-cancellation staging branch
Point the LinearAlgebra stdlib at KenoAIStaging/LinearAlgebra.jl branch
kf/blas-cancellation (the previously pinned upstream commit plus the
BLAS cancellation-hook integration): large gemm!/symm!/hemm! calls
register a per-task cancellation hook that trips the patched OpenBLAS's
cancellation token, so cancelling the calling task - including ^C at the
REPL - aborts the operation at block granularity. Restore the JuliaLang
URLs when the staged branch lands upstream.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012nCkyKUguncLLJrH9K5o7m