fix(npm): android only supports arm64 in goreleaser

The test incorrectly listed x64 as a supported arch for android, but
goreleaser only builds arm64 for android/termux.

npm-package/test/integration.test.js

@@ -371,7 +371,7 @@ async function testPlatformDetection() {
     const supportedPlatforms = {
       darwin: ['x64', 'arm64'],
       linux: ['x64', 'arm64'],
-      android: ['x64', 'arm64'],
+      android: ['arm64'],  // Only arm64 built for android/termux
       win32: ['x64', 'arm64']
     };