niv musl-wasi: update a796d874 -> c5264e2b (#4331)

## Changelog for musl-wasi:
Branch: main
Commits: [WebAssembly/wasi-libc@a796d874...c5264e2b](WebAssembly/wasi-libc@a796d87...c5264e2)

* [`c5264e2b`](WebAssembly/wasi-libc@c5264e2) fix libdl.so symbol visibility ([WebAssembly/wasi-libc⁠#450](https://togithub.com/WebAssembly/wasi-libc/issues/450))

nix/sources.json

@@ -102,10 +102,10 @@
         "homepage": "https://wasi.dev",
         "owner": "WebAssembly",
         "repo": "wasi-libc",
-        "rev": "a796d874f8c47641c410746a3d4bd6a85d2baac2",
-        "sha256": "1hcdxrdn2j8hfm38frfshvcj2fiva2cva0kxjxazwxln5r77smgj",
+        "rev": "c5264e2bbe532994d06b039005f2af91bedcc1a6",
+        "sha256": "1skw2jqzaidr2zbzbjw32b36xvqniwf4if8cr4kbpp8vjvh7j2lr",
         "type": "tarball",
-        "url": "https://github.com/WebAssembly/wasi-libc/archive/a796d874f8c47641c410746a3d4bd6a85d2baac2.tar.gz",
+        "url": "https://github.com/WebAssembly/wasi-libc/archive/c5264e2bbe532994d06b039005f2af91bedcc1a6.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {