minor #41454 [Messenger] Make sure bridge packages have correct dependencies (Nyholm)

This PR was merged into the 6.0 branch.

Discussion
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[Messenger] Make sure bridge packages have correct dependencies

| Q             | A
| ------------- | ---
| Branch?       | 6.0
| Bug fix?      |  no
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

Add some PHP extensions and move some packages from `require-dev` to `require`.

Commits
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4e2228d883 Make sure Messenger's bridge package has correct deps

Author: nicolas-grekas

composer.json

@@ -17,6 +17,7 @@
     ],
     "require": {
         "php": ">=8.0.2",
+        "ext-amqp": "*",
         "symfony/deprecation-contracts": "^2.1",
         "symfony/messenger": "^5.4|^6.0"
     },