minor #1062 Leverage symfony-tools/fabbot (nicolas-grekas)

This PR was merged into the 2.x branch.

Discussion
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Leverage symfony-tools/fabbot

symfony/symfony#61260
twigphp/Twig#4671
https://github.com/symfony-tools/fabbot

Commits
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3a96cbd Leverage symfony-tools/fabbot

Author: nicolas-grekas

.github/workflows/fabbot.yml

@@ -0,0 +1,14 @@
+name: CS
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  call-fabbot:
+    name: Fabbot
+    uses: symfony-tools/fabbot/.github/workflows/fabbot.yml@main
+    with:
+      package: Symfony Flex