Enabling dependency analysis when linting swift package with swift-format

I'm using this plugin to lint my package with swift-format:

// SwiftFormatPlugin.swift

import Foundation
import PackagePlugin

@main struct SwiftFormatPlugin: BuildToolPlugin {
    func createBuildCommands(context: PluginContext, target: Target) throws -> [Command] {
        let directory = context.package.directoryURL
        let plugin = directory.appending(path: "Plugins/SwiftFormatPlugin")
        return [
            .buildCommand(
                displayName: "SwiftFormatPlugin",
                executable: URL(filePath: "/bin/bash"),
                arguments: [
                    plugin.appending(component: "script.sh").path,
                    directory.path,
                    directory.appending(path: ".swift-format").path
                ],
                environment: [:],
                inputFiles: [],
                outputFiles: []
            )
        ]
    }
}

This is the contents of my Package.swift file:

// Package.swift

import PackageDescription

let package = Package(
    name: "MyLibrary",
    products: [
        .library(
            name: "MyLibrary",
            targets: ["MyLibrary"]
        )
    ],
    targets: [
        .target(
            name: "MyLibrary",
            plugins: [
                .plugin(name: "SwiftFormatPlugin")
            ]
        ),
        .plugin(
            name: "SwiftFormatPlugin",
            capability: .buildTool(),
            path: "Plugins/SwiftFormatPlugin"
        )
    ]
)

And finally the script my plugin is executing:

#!/bin/bash
# script.sh

echo "SwiftFormatPlugin test .................."

It works alright as I am getting desired output when building:

SwiftFormatPlugin test ..................

But I'm also getting this:

I want to fix that, but how do I "check" that option? The script phase or the mentioned checkbox is nowhere in the UI for package targets.