[wasm] Update wasi-libc to version 27

This release includes various fixes and features, including:
* Fix for too conservative incremental builds
  WebAssembly/wasi-libc@eadb436
* Opt-in busywait mode for futexes
  WebAssembly/wasi-libc#562
* Musl update from 1.2.3 to 1.2.5
  WebAssembly/wasi-libc#557

Author: kateinoigakukun

utils/update_checkout/update-checkout-config.json

@@ -175,7 +175,7 @@
                 "swift-nio": "2.65.0",
                 "swift-experimental-string-processing": "swift/main",
                 "swift-sdk-generator": "main",
-                "wasi-libc": "wasi-sdk-25",
+                "wasi-libc": "wasi-sdk-27",
                 "wasmkit": "0.1.2",
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
@@ -603,7 +603,7 @@
                 "swift-nio": "2.65.0",
                 "swift-experimental-string-processing": "swift/main",
                 "swift-sdk-generator": "main",
-                "wasi-libc": "wasi-sdk-25",
+                "wasi-libc": "wasi-sdk-27",
                 "wasmkit": "0.1.2",
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",
@@ -661,7 +661,7 @@
                 "swift-nio": "2.65.0",
                 "swift-experimental-string-processing": "swift/main",
                 "swift-sdk-generator": "main",
-                "wasi-libc": "wasi-sdk-25",
+                "wasi-libc": "wasi-sdk-27",
                 "wasmkit": "0.1.2",
                 "curl": "curl-8_9_1",
                 "libxml2": "v2.11.5",