Drop support for Alpine Linux-specific version

[datho7561]

We can't build a binary version of the language server for Alpine Linux any more due to bugs/limitations in GraalVM and changes to the runners in GitHub Actions.

It's probably okay to drop Alpine Linux support, since Alpine Linux is usually used on servers instead of as a desktop operating system, and it's a real pain to set up as a desktop operating system.

Alpine Linux users should still be able to use the extension if they install Java.

[datho7561]

Need to add an entry to the CHANGELOG done

[rgrunber]

vscode-xml/src/server/binary/binaryServerStarter.ts

Lines 209 to 218 in 62f6a66

	/**
	* Returns the platform of the current operating system.
	* If the OS is Alpine Linux, it returns 'alpine'.
	* Otherwise, it returns the platform string provided by the 'os' module.
	*
	* @returns The platform of the current operating system.
	*/
	function getPlatform (): NodeJS.Platform | 'alpine' {
	return fs.existsSync('/etc/alpine-release') ? 'alpine' : os.platform();
	}

mentions the path to the alpine binary, but if that's gonna be the linux one, then it should probably be removed ?