build(deps): bump portable-atomic from 1.13.1 to 1.15.0

[dependabot]

Bumps portable-atomic from 1.13.1 to 1.15.0.

Changelog

Sourced from portable-atomic's changelog.

[1.15.0] - 2026-08-09

• Work around core::sync::atomic bug which may cause data races with non-relaxed load/CAS on pre-v6 ARM Linux/Android due to missing memory barrier. (#112)

• Make {8,16,32}-bit non-relaxed load compatible with read-only memory on pre-v6 ARM Linux/Android. Previously only relaxed load was compatible with read-only memory. (#112)

• Make from_ptr const fn on Rust 1.58+. Previously it was const fn only on Rust 1.83+. (c09d0e6)

• Optimize non-relaxed load/store on pre-v6 ARM Linux/Android. (#112)

• Optimize fence on pre-v6 ARM Linux/Android. (#112)

• Optimize 128-bit CAS/swap/min/max on s390x. This also includes removing the code complexity that caused the bug fixed in 1.14.0. (33cd7e5, 6c8f764)

• Documentation improvements.

[1.14.0] - 2026-07-17

• Guarantee that is_lock_free to always return the same result. (e74f384)

• Fix bug in 128-bit fetch_{min,max} on pre-z196 s390x. (a6c6c4b)

• Fix bug in atomic float fetch_{add,sub,max,min} on AArch64 when FEAT_LSFE is enabled. (There are currently no known CPUs that support FEAT_LSFE.) (b105f9bc)

• Fix panic in build script when custom target with non-standard name on non-nightly rustc. (02ca737)

• Improve robustness of interrupt disable/restore on RISC-V and Xtensa. (88cb3d5)

• Optimize SeqCst fence on x86. (9127b31)

• Optimize 128-bit CAS when FEAT_LSE is not enabled. (671b9a89)

• Optimize SeqCst atomics on AArch64 Windows MSVC. (671b9a89)

• Optimize 8-bit fetch_and/fetch_or/fetch_xor/fetch_not on AVR when RMW instructions available. (6f2f11f2)

• Optimize 128-bit RMW on s390x. (b8c502a9)

• Optimize run-time CPU feature detection. (cae7032)

• Enable run-time detection by default on AArch64 Apple targets. (6c92015)

• Enable run-time detection by default on AArch64 illumos. (59e3636b)

• aarch64: Support run-time detection of FEAT_LSE2 on Windows. (16bc44f0)

• Make portable_atomic_no_outline_atomics cfg no-op instead of compile error on unsupported architectures. (6b8e3eb)

• Improve compile-time detection of AVR target features. (2b5a9a4f)

... (truncated)

Commits

• e459552 Release 1.15.0
• cb58081 Update changelog
• c5b8b98 arm_linux: Remove useless cache
• b97efba ci: Re-enable detect_false test on Android
• eaee7ec detect: Update comments
• c6fab54 tests: AArch64 L4Re is now available as builtin target
• d0832a1 tsan: Enable Adaptive Delay
• 81c2ee5 ci: Clean up sanitizer job
• cfb767d Optimize non-relaxed load/store/fence and work around compiler-builtins bug o...
• f19289e ci: Use full-length rev for mgba-test-runner
• Additional commits viewable in compare view

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