Release v2.25.2

Release: v2.25.2 [skip ci]

Patch

• Fix: Stale build.rs paths (#749) (f900b5a)
• Improve: Exposing HNSW graph iterators to C++ & Rust (55c43f7)
• Improve: Expose on-disk Index metadata in Rust (7f16323)
• Make: Bump NumKong to 7.6 for Float8 speedups (16681be)
• Fix: Restore 2D NDArray return for Index.vectors and eval.self_recall (13e2393)
• Improve: Harden Python type hints (cdc7be6)
• Make: Enforce "MinGW Makefiles" in CI (6cdc67e)
• Fix: Index.get returns uninitialized memory for missing keys (22f76d3)
• Make: Switch JNI Linux link to mold (bdcd45d)