[DIAG] Attempt to fix "ERROR [launcher.sauce]: Can not start safari latest"

https://buildkite.com/rails/rails/builds/118358#01969a38-6324-4e5f-9ced-bff4b8b87599

```
04 05 2025 07:36:27.081:ERROR [launcher.sauce]: Can not start safari latest
  [init({"version":"latest","platform":"ANY","tags":[],"name":"ActionCable JS Client","tunnel-identifier":"karma1746344174","record-video":false,"record-screenshots":false,"device-orientation":null,"disable-popup-handler":true,"build":"Buildkite 01969a38-6324-4e5f-9ced-bff4b8b87599","public":null,"commandTimeout":300,"idleTimeout":90,"maxDuration":1800,"customData":{},"base":"SauceLabs","browserName":"safari"})] The environment you requested was unavailable.
  UnsupportedPlatform - no images found for the specified caps
```

According to https://saucelabs.com/products/platform-configurator
macOS Sonoma 14 is beta under SauceLab then using macOS Ventura 13
and specify the Safari version 16.

Author: yahonda

actioncable/karma.conf.js

@@ -25,7 +25,7 @@ if (process.env.CI) {
   config.customLaunchers = {
     sl_chrome: sauce("chrome", 70),
     sl_ff: sauce("firefox", 63),
-    sl_safari: sauce("safari", "latest"),
+    sl_safari: sauce(“safari”, “16”, “macOS 13”),
     sl_edge: sauce("microsoftedge", 17.17134, "Windows 10"),
   }