Use HTTP 1.1 protocol in ClientInterface implementing classes

Author: aik099

src/Jira/Api/Client/CurlClient.php

@@ -93,6 +93,7 @@ public function sendRequest(
 			curl_setopt($curl, CURLOPT_USERPWD, sprintf('%s:%s', $credential->getId(), $credential->getPassword()));
 		}
 
+		curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
 		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
 		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
 		curl_setopt($curl, CURLOPT_VERBOSE, $debug);

src/Jira/Api/Client/PHPClient.php

@@ -123,6 +123,7 @@ public function sendRequest(
 				'method' => $method,
 				'header' => implode("\r\n", $header),
 				'ignore_errors' => true,
+				'protocol_version' => 1.1, // Not needed since PHP 8.0.
 			),
 		);