Merge branch '4.4' into 5.1

* 4.4:
  CS fix
  [travis] use PHP 8.0 to patch return types and run deps=low
  Update sl_SI translations
  Don't trigger deprecation for deprecated aliases pointing to deprecated definitions
  [HttpFoundation] use atomic writes in MockFileSessionStorage
  [DI] fix param annotation
  [Config] Add \Symfony\Component\Config\Loader::load() return type
  Simplify PHP CS Fixer config
  Rename normalize param

Author: nicolas-grekas

composer.json

@@ -21,12 +21,12 @@
         "symfony/polyfill-php80": "^1.15"
     },
     "require-dev": {
-        "doctrine/dbal": "^2.5|^3.0",
+        "doctrine/dbal": "^2.6|^3.0",
         "mongodb/mongodb": "~1.1",
         "predis/predis": "~1.0"
     },
     "conflict": {
-        "doctrine/dbal": "<2.5"
+        "doctrine/dbal": "<2.6"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Lock\\": "" },