🐛 Fix various minor issues (discovered via #162)

- Renaming the configuration files from `www.conf` to the backup
  (`disabled-by-phpmon`) will now succeed if the `disabled-by-phpmon`
  file already exists. This would fail if the `disabled-by-phpmon` file
  already existed in previous builds.

- The PHP-FPM alert when there's an issue with a missing socket
  configuration file has been tweaked and now contains a workaround if
  you want to run a newer version of PHP (e.g. PHP 8.2) that is not
  officially supported by Valet yet.

- When attempting to list the PHP version numbers, the `parse()` method
  is now used, as opposed to `PhpVersionNumber.make()`, which couldn't
  correctly handle pre-release versions of PHP.

- Updated tests to reflect these changes to `PhpVersionNumber`.

phpmon/Common/Helpers/VersionExtractor.swift

@@ -11,7 +11,7 @@ import Foundation
 class VersionExtractor {
     
     /**
-     This attempts to extract the version number from the command line output of Valet.
+     This attempts to extract the version number from any given string.
      */
     public static func from(_ string: String) -> String? {
         do {