Action does not read .swift-version

[sidepelican]

I expected to read .swift-version file when no options specified like belew

// in my steps
- uses: swiftwasm/setup-swiftwasm@v1

but .swift-version was not used. because

setup-swiftwasm/action.yml

Line 10 in 8e7c319

default: 'wasm-5.7.1-RELEASE'

default swift-version option exists and read it first.

setup-swiftwasm/index.js

Lines 48 to 59 in 8e7c319

	const version = core.getInput('swift-version') || options.version;
	if (version) {
	core.debug(`Using version from input: ${version}`);
	return version;
	}
	if (fs.existsSync(".swift-version")) {
	const versionFile = fs.readFileSync('.swift-version', 'utf8').trim();
	if (versionFile !== "") {
	core.debug(`Using version from .swift-version file: ${versionFile}`);
	return versionFile;
	}
	}