Change default php version to 8.3 and remove config values for 5.x and 7.x.

This matches the default php version used in the php-parser project and
removes options for very old eol versions.  PHP 5.6 eol in January 2019
and 7.4 in November 2022.

Author: mreiden

src/options.mjs

@@ -5,21 +5,9 @@ export default {
     since: "0.13.0",
     category: CATEGORY_PHP,
     type: "choice",
-    default: "7.0",
+    default: "8.3",
     description: "Minimum target PHP version.",
     choices: [
-      { value: "5.0" },
-      { value: "5.1" },
-      { value: "5.2" },
-      { value: "5.3" },
-      { value: "5.4" },
-      { value: "5.5" },
-      { value: "5.6" },
-      { value: "7.0" },
-      { value: "7.1" },
-      { value: "7.2" },
-      { value: "7.3" },
-      { value: "7.4" },
       { value: "8.0" },
       { value: "8.1" },
       { value: "8.2" },