Chore: bump github.com/xssnick/raptorq from 1.3.0 to 1.4.0

[dependabot]

Bumps github.com/xssnick/raptorq from 1.3.0 to 1.4.0.

Release notes

Sourced from github.com/xssnick/raptorq's releases.

v1.4.0

• Store fast symbols in contiguous buffers and make slow symbol indexing lazy to cut decoder allocations
• Add all-fast decode fast-path that returns data without running the solver
• Reuse decode symbol slices through a small pool instead of allocating per decode
• Add matrix arena with pooled chunks, typed scratch slices, and dirty/zeroed matrix allocation modes
• Build sparse row and column indexes for inactivation instead of scanning dense matrices
• Track A_upper nonzero entries while building the matrix and reuse them for inactivation and permutation
• Apply row/column permutation and build upper sparse indexes in one pass
• Avoid repeated GetRows/GetCols dense scans during U identity and final C reconstruction
• Convert solver helpers to arena-backed row-wise operations to reduce temporary matrices and divisions
• Pass scratch buffers into Gaussian elimination and apply row permutations in place
• Add AVX2 XOR fast-path on amd64 with runtime CPU feature detection
• Move discmath under internal pkg
• Raise module Go version to 1.25

Commits

• f970781 Huge optimizations + arena and AVX2 for amd64
• See full diff in compare view

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