minor #32228 [Mailer] fix tests on Windows (fabpot)

This PR was merged into the 4.3 branch.

Discussion
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[Mailer] fix tests on Windows

| Q             | A
| ------------- | ---
| Branch?       | 4.3
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

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 - Bug fixes must be submitted against the lowest maintained branch where they apply
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Commits
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90f61e9efa [Mailer] fixed tests on Windows

src/Symfony/Component/Mailer/Tests/Transport/Smtp/Stream/SocketStreamTest.php

@@ -18,7 +18,7 @@ class SocketStreamTest extends TestCase
 {
     /**
      * @expectedException \Symfony\Component\Mailer\Exception\TransportException
-     * @expectedExceptionMessage Connection refused
+     * @expectedExceptionMessageRegExp /Connection refused|unable to connect/
      */
     public function testSocketErrorNoConnection()
     {
@@ -30,7 +30,7 @@ class SocketStreamTest extends TestCase
 
     /**
      * @expectedException \Symfony\Component\Mailer\Exception\TransportException
-     * @expectedExceptionMessage no valid certs found cafile stream
+     * @expectedExceptionMessageRegExp /no valid certs found cafile stream|Unable to find the socket transport "ssl"/
      */
     public function testSocketErrorBeforeConnectError()
     {