fix: Update ngrok regex to include .dev domains

[jay-watt]

Description

Add .dev domains to the ngrok hostname regex. The free tier uses ngrok-free.dev for automatically assigned URLs, while paid users may use ngrok.dev. Previously only .app and .pizza domains were matched, meaning free-tier ngrok tunnels would not be recognised.

Testing Instructions

1. Check out this pull request
2. Start a ngrok free-tier tunnel which will generate a ngrok-free.dev URL
3. Verify the tunnel is recognised and behaves correctly
4. Use a paid account to repeat steps 2-3 with a ngrok.dev URL
5. Use a paid account to confirm existing ngrok.app and ngrok.pizza URLs still work as before

Checklist

• Does what the author says it will do
• Testing instructions are provided
• Commit messages make sense and follow the conventional commit standard
• No identified security issues
• No identified maintenance issues
• Any third-party libraries/dependencies use the MIT or Apache 2.0 license
• Changes made are backwards compatible and will not break existing setups
• Changes to scripts in the bin/ directory run correctly on both MacOS and WSL
• Changes to containers can be built locally sucessfully (e.g. via tbuild container && tup container)
• Containers/images are compatible with both AMD64 (Windows) and ARM64 (MacOS)
• Changes made to config.php are compatible with our oldest supported Totara version, our newest Totara version, and Moodle

[TotaraAdmin]

🎉 This PR is included in version 1.24.0 🎉

The release is available on GitHub release

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