Merge branch '4.4' into 5.2

* 4.4:
  Allow psr/cache v3 but on symfony/cache
  [DI] fix tracking of changes to vendor/ dirs
  Remove EOLed 5.1 branch from PR template
  [HttpKernel] [Kernel] Silence deprecations logs writes
  Update PULL_REQUEST_TEMPLATE.md
  [Mailer][Mime] Update inline part names with newly generated ContentId
  Fixed updating catalogue metadata from intl domain
  [HttpFoundation] Setting `REQUEST_TIME_FLOAT` when constructing a Request object

Author: nicolas-grekas

Cache/composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=7.2.5",
-        "psr/cache": "^1.0|^2.0"
+        "psr/cache": "^1.0|^2.0|^3.0"
     },
     "suggest": {
         "symfony/cache-implementation": ""

composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=7.2.5",
-        "psr/cache": "^1.0|^2.0",
+        "psr/cache": "^1.0|^2.0|^3.0",
         "psr/container": "^1.0",
         "psr/event-dispatcher": "^1.0"
     },