curl_multi_close: add changelog for NOP and deprecation

[DanielEScherzer]

No description provided.

[lacatoire]

Thanks for adding the changelog entries! The 8.0.0 NOP entry looks good 👍 For the 8.5.0 deprecation though, I couldn't find evidence that curl_multi_close() was deprecated. Looking at
ext/curl/curl.stub.php, curl_close() has the deprecation attribute:

#[\Deprecated(since: '8.5', message: "as it has no effect since PHP 8.0")]                                                                                                                              
function curl_close(CurlHandle $handle): void {}                                                                                                                                                        
                                                                                                                                                                                                        
But https://github.com/php/php-src/blob/PHP-8.5/ext/curl/curl.stub.php#L109 doesn't seem to have one:                                                                                                   
                                                                                                                                                                                                        
function curl_multi_close(CurlMultiHandle $multi_handle): void {}                                                                                                                                       
                                                                                                                                                                                                        
Am I missing something? If it's intentionally not deprecated, maybe we should remove that entry from this PR.       

[DanielEScherzer]

Good catch - this should have been for curl_share_close

[DanielEScherzer]

Sent #5249 with the correct function