chore: update newlib-esp32 to esp-4.3.0_20250211-patch5

Update newlib version to patch5 which includes the split of _exit
from syscalls.c to syscalls_exit.c.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: luoliwoshang

internal/crosscompile/compile/libc/libc_test.go

@@ -17,23 +17,23 @@ func TestGetNewlibESP32Config_LibConfig(t *testing.T) {
 		t.Errorf("Expected Name '%s', got '%s'", expectedName, config.Name)
 	}
 
-	expectedVersion := "esp-4.3.0_20250211-patch4"
+	expectedVersion := "esp-4.3.0_20250211-patch5"
 	if config.Version != expectedVersion {
 		t.Errorf("Expected Version '%s', got '%s'", expectedVersion, config.Version)
 	}
 
-	expectedUrl := "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch4.tar.gz"
+	expectedUrl := "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch5.tar.gz"
 	if config.Url != expectedUrl {
 		t.Errorf("Expected Url '%s', got '%s'", expectedUrl, config.Url)
 	}
 
-	expectedArchiveSrcDir := "newlib-esp-4.3.0_20250211-patch4"
+	expectedArchiveSrcDir := "newlib-esp-4.3.0_20250211-patch5"
 	if config.ResourceSubDir != expectedArchiveSrcDir {
 		t.Errorf("Expected ResourceSubDir '%s', got '%s'", expectedArchiveSrcDir, config.ResourceSubDir)
 	}
 
 	// Test String() method
-	expectedString := "newlib-esp32-esp-4.3.0_20250211-patch4"
+	expectedString := "newlib-esp32-esp-4.3.0_20250211-patch5"
 	if config.String() != expectedString {
 		t.Errorf("Expected String() '%s', got '%s'", expectedString, config.String())
 	}

internal/crosscompile/compile/libc/newlibesp.go

@@ -29,10 +29,10 @@ func withDefaultCCFlags(ccflags []string) []string {
 // GetNewlibESP32Config returns the configuration for downloading and building newlib for ESP32
 func GetNewlibESP32Config() compile.LibConfig {
 	return compile.LibConfig{
-		Url:            "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch4.tar.gz",
+		Url:            "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch5.tar.gz",
 		Name:           "newlib-esp32",
-		Version:        "esp-4.3.0_20250211-patch4",
-		ResourceSubDir: "newlib-esp-4.3.0_20250211-patch4",
+		Version:        "esp-4.3.0_20250211-patch5",
+		ResourceSubDir: "newlib-esp-4.3.0_20250211-patch5",
 	}
 }