Update Rust crate libm to v0.2.16

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
libm	workspace.dependencies	patch	0.2.15 → 0.2.16

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Release Notes

rust-lang/compiler-builtins (libm)

v0.2.16

Compare Source

Fixed

• Fix an incorrect result for fminimum and fmaximum with the input (-0, NaN)
• Fix a typo in libm::Libm::roundeven
• Fix the expm1f overflow threshold
• Change CmpResult to use a pointer-sized return type
• Compare against CARGO_CFG_TARGET_FAMILY in a multi-valued fashion
• Implement exp and its variants for i586 with inline assembly
• Implement floor and ceil in assembly on i586

Other

• Significantly optimize fmod worst case performance (#​1002)

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