🐛 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-tests/Versions/PhpVersionNumberTest.swift

@@ -11,20 +11,24 @@ import XCTest
 class PhpVersionNumberTest: XCTestCase {
 
     func testCanDeconstructPhpVersion() throws {
+        XCTAssertEqual(
+            try! PhpVersionNumber.parse("PHP 8.2.0-dev"),
+            PhpVersionNumber(major: 8, minor: 2, patch: 0)
+        )
         XCTAssertEqual(
             try! PhpVersionNumber.parse("PHP 8.1.0RC5-dev"),
             PhpVersionNumber(major: 8, minor: 1, patch: 0)
         )
         XCTAssertEqual(
-            PhpVersionNumber.make(from: "8.0.11"),
+            try! PhpVersionNumber.parse("8.0.11"),
             PhpVersionNumber(major: 8, minor: 0, patch: 11)
         )
         XCTAssertEqual(
-            PhpVersionNumber.make(from: "7.4.2"),
+            try! PhpVersionNumber.parse("7.4.2"),
             PhpVersionNumber(major: 7, minor: 4, patch: 2)
         )
         XCTAssertEqual(
-            PhpVersionNumber.make(from: "7.4"),
+            try! PhpVersionNumber.parse("7.4"),
             PhpVersionNumber(major: 7, minor: 4, patch: nil)
         )
         XCTAssertEqual(