fix: flaky test

Author: bednar

tests/WriteApiTest.php

@@ -331,27 +331,27 @@ public function testRetryBackoffTime()
         $retry = new WriteRetry();
 
         $backoff = $retry->getBackoffTime(1);
-        $this->assertGreaterThan(5000, $backoff);
+        $this->assertGreaterThanOrEqual(5000, $backoff);
         $this->assertLessThanOrEqual(10000, $backoff);
 
         $backoff = $retry->getBackoffTime(2);
-        $this->assertGreaterThan(10000, $backoff);
+        $this->assertGreaterThanOrEqual(10000, $backoff);
         $this->assertLessThanOrEqual(20000, $backoff);
 
         $backoff = $retry->getBackoffTime(3);
-        $this->assertGreaterThan(20000, $backoff);
+        $this->assertGreaterThanOrEqual(20000, $backoff);
         $this->assertLessThanOrEqual(40000, $backoff);
 
         $backoff = $retry->getBackoffTime(4);
-        $this->assertGreaterThan(40000, $backoff);
+        $this->assertGreaterThanOrEqual(40000, $backoff);
         $this->assertLessThanOrEqual(80000, $backoff);
 
         $backoff = $retry->getBackoffTime(5);
-        $this->assertGreaterThan(80000, $backoff);
+        $this->assertGreaterThanOrEqual(80000, $backoff);
         $this->assertLessThanOrEqual(125000, $backoff);
 
         $backoff = $retry->getBackoffTime(6);
-        $this->assertGreaterThan(80000, $backoff);
+        $this->assertGreaterThanOrEqual(80000, $backoff);
         $this->assertLessThanOrEqual(125000, $backoff);
     }