Update index.js to add Swift 5.9

Author: o-nnerb

dist/index.js

@@ -540,6 +540,7 @@ const semver = __importStar(__nccwpck_require__(1383));
 const core = __importStar(__nccwpck_require__(2186));
 const os_1 = __nccwpck_require__(1855);
 const VERSIONS_LIST = [
+    ["5.9", [os_1.OS.MacOS, os_1.OS.Ubuntu]],
     ["5.8", [os_1.OS.MacOS, os_1.OS.Ubuntu]],
     ["5.7.3", [os_1.OS.MacOS, os_1.OS.Ubuntu]],
     ["5.7.2", [os_1.OS.MacOS, os_1.OS.Ubuntu]],
@@ -17925,4 +17926,4 @@ module.exports = JSON.parse('{"/etc/fedora-release":["Fedora"],"/etc/redhat-rele
 /******/ 	module.exports = __webpack_exports__;
 /******/ 	
 /******/ })()
-;
+;