Merge branch '4.4' into 5.1

* 4.4:
  Add missing `@return` annotations to fix deprecations on PHP 8
  [ProxyManagerBridge] fix PHP notice, switch to "friendsofphp/proxy-manager-lts"

Author: nicolas-grekas

Tests/Fixtures/Type/StringWrapperType.php

@@ -18,6 +18,8 @@ class StringWrapperType extends StringType
 {
     /**
      * {@inheritdoc}
+     *
+     * @return mixed
      */
     public function convertToDatabaseValue($value, AbstractPlatform $platform)
     {
@@ -26,6 +28,8 @@ public function convertToDatabaseValue($value, AbstractPlatform $platform)
 
     /**
      * {@inheritdoc}
+     *
+     * @return mixed
      */
     public function convertToPHPValue($value, AbstractPlatform $platform)
     {

Tests/PropertyInfo/Fixtures/DoctrineFooType.php

@@ -43,6 +43,8 @@ public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $pla
 
     /**
      * {@inheritdoc}
+     *
+     * @return mixed
      */
     public function convertToDatabaseValue($value, AbstractPlatform $platform)
     {
@@ -58,6 +60,8 @@ public function convertToDatabaseValue($value, AbstractPlatform $platform)
 
     /**
      * {@inheritdoc}
+     *
+     * @return mixed
      */
     public function convertToPHPValue($value, AbstractPlatform $platform)
     {