Merge branch '6.2' into 6.3

* 6.2:
  [Clock] fix usleep deprecation warning
  [Cache] sync Redis6Proxy with upstream
  [HttpFoundation] IPv4-mapped IPv6 addresses incorrectly rejected
  Minor (comment only), part 2
  [RateLimiter] Add typecast to Reservation::wait
  chore: fix syntax error
  [FrameworkBundle] add `kernel.locale_aware` tag to `LocaleSwitcher`
  [FrameworkBundle] Remove check of undefined service in mailer assertions
  [VarDumper] Ignore \Error in __debugInfo()

Author: nicolas-grekas

MonotonicClock.php

@@ -67,7 +67,7 @@ public function sleep(float|int $seconds): void
         }
 
         if (0 < $us = $seconds - $s) {
-            usleep($us * 1E6);
+            usleep((int) ($us * 1E6));
         }
     }
 

NativeClock.php

@@ -41,7 +41,7 @@ public function sleep(float|int $seconds): void
         }
 
         if (0 < $us = $seconds - $s) {
-            usleep($us * 1E6);
+            usleep((int) ($us * 1E6));
         }
     }
 

Tests/MonotonicClockTest.php

@@ -56,7 +56,7 @@ public function testSleep()
         usleep(10);
         $after = microtime(true);
 
-        $this->assertGreaterThanOrEqual($before + 1.5, $now);
+        $this->assertGreaterThanOrEqual($before + 1.499999, $now);
         $this->assertLessThan($after, $now);
         $this->assertLessThan(1.9, $now - $before);
         $this->assertSame($tz, $clock->now()->getTimezone()->getName());