Roll libc++ from 4c0596219258 to 5803cf191826 (1 revision)

https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxx.git/+log/4c0596219258..5803cf191826

2025-04-18 [email protected] [libc++] Simplify the generic implementation of is_{un}signed (#136095)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/libcxx-chromium
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

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Tbr: [email protected],[email protected]
Change-Id: Ic0da180963da41bcfad845627a2b78dc83385b62
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6471697
Bot-Commit: chromium-autoroll <[email protected]>
Commit-Queue: chromium-autoroll <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1448796}
NOKEYCHECK=True
GitOrigin-RevId: 873c29af2307215a401b991a220a68e6984ba7f9

Author: chromium-autoroll

deps_revisions.gni

@@ -5,5 +5,5 @@
 declare_args() {
   # Used to cause full rebuilds on libc++ rolls. This should be kept in sync
   # with the libcxx_revision var in //DEPS.
-  libcxx_revision = "4c0596219258717d152093fb3e811e5f6bec9c79"
+  libcxx_revision = "5803cf191826eea42e190747beeda9aa1b40ff62"
 }