minor #13367 [Maintenance] Remove Sf6.0 conflicts (lchrusciel)

This PR was merged into the 1.11-dev branch.

Discussion
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| Q               | A
| --------------- | -----
| Branch?         | master
| Bug fix?        | no
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | 
| License         | MIT

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Sf 5.2 is not supported in master, so conflicts are not needed 

Commits
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8b72684 [Maintenance] Remove Sf6.0 conflicts

CONFLICTS.md

@@ -3,13 +3,6 @@
 This document explains why certain conflicts were added to `composer.json` and
 references related issues.
 
- - `symfony/cache": "^6.0`, "symfony/amqp-messenger": "^6.0", "symfony/doctrine-messenger": "^6.0", 
-"symfony/error-handler": "^6.0", "symfony/redis-messenger": "^6.0", "symfony/stopwatch": "^6.0", "symfony/twig-bridge": "^6.0", 
-"symfony/var-dumper": "^6.0", "symfony/var-exporter": "^6.0",:
-
-   Symfony in version 5.2 is installing amqp-messenger, doctrine-messenger, error-handler, redis-messenger, stopwatch, 
-twig-bridge, var-dumper, var-exporter 6.0, which is not compatible with the current version of Sylius. This is not happening for Sf4.4, Sf5.3, Sf5.4. 
-
  - `symfony/password-hasher": "^6.0`:
 
    Symfony in version 5.3 change password hashing logic, and in version 6.0 they removed BC layer

composer.json

@@ -161,17 +161,8 @@
         "doctrine/doctrine-bundle": "2.3.0",
         "doctrine/orm": "^2.10.0",
         "jms/serializer-bundle": "3.9.0",
-        "symfony/cache": "^6.0",
         "symfony/doctrine-bridge": "4.4.16",
         "symfony/password-hasher": "^6.0",
-        "symfony/amqp-messenger": "^6.0",
-        "symfony/doctrine-messenger": "^6.0",
-        "symfony/error-handler": "^6.0",
-        "symfony/redis-messenger": "^6.0",
-        "symfony/stopwatch": "^6.0",
-        "symfony/twig-bridge": "^6.0",
-        "symfony/var-dumper": "^6.0",
-        "symfony/var-exporter": "^6.0",
         "symfony/property-info": "4.4.22 || 5.2.7",
         "symfony/serializer": "4.4.19 || 5.2.2",
         "liip/imagine-bundle": "^2.7"