Merge branch '6.0' into 6.1

* 6.0:
  Fix URL to get composer.phar
  Fix appveyor
  [TwigBridge] Fix the build

Author: nicolas-grekas

composer.json

@@ -65,8 +65,7 @@
         "symfony/uid": "^5.4|^6.0",
         "symfony/web-link": "^5.4|^6.0",
         "phpdocumentor/reflection-docblock": "^3.0|^4.0|^5.0",
-        "twig/twig": "^2.10|^3.0",
-        "symfony/phpunit-bridge": "^5.4|^6.0"
+        "twig/twig": "^2.10|^3.0"
     },
     "conflict": {
         "doctrine/annotations": "<1.13.1",