Potential fix for code scanning alert no. 2: Binding a socket to all network interfaces

[BattlefieldDuck]

Potential fix for https://github.com/opengsq/opengsq-python/security/code-scanning/2

General approach:
To fix the security issue, the socket should be bound to a specific interface instead of all interfaces ("0.0.0.0"). The most straightforward and least disruptive way, maintaining current functionality, is to bind the socket to the interface specified by self._host (the host/target for the listener). This restricts the listener to only receive broadcasts arriving at that interface/IP. If there is a use case where "0.0.0.0" is required, the constructor could accept an optional bind address parameter, defaulted to self._host.

Detailed steps:

• In the file opengsq/protocols/w40kdow.py, locate the line where the socket is bound: sock.bind(("0.0.0.0", self._port)).
• Replace "0.0.0.0" with self._host to restrict binding to the specific interface indicated by self._host.
• Document this behavior; if there are cases where binding to all interfaces is required, consider making this configurable through the constructor by adding an optional bind_host argument.
• For initial remediation here, simply change "0.0.0.0" to self._host, as that's the most secure and consistent strategy without altering the API.

No additional imports or new dependencies are required.

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