feat: Update google/protobuf version to support PHP 8.2

Feature Request

Current version of google/protobuf is 3.15.8 which released on Apr 8, 2021:
https://github.com/protocolbuffers/protobuf-php/releases/tag/v3.15.8

There are some problems in this version, at least:

1. At least in file: src/Google/Protobuf/Internal/MapFieldIter.php
   Error: Deprecated: Creation of dynamic property ...
   About: https://php.watch/versions/8.2/dynamic-properties-deprecated
   Fix: https://github.com/protocolbuffers/protobuf-php/commit/1fc16ac4b14107db52597c98b08a80a85a3167d5#diff-5c41e27198ffb65ea878fe448f662bb2f8193ab90801f37c850b6c582dc1294f
2. At least in files:

   src/Google/Protobuf/Internal/MapField.php
   src/Google/Protobuf/Internal/MapFieldIter.php
   src/Google/Protobuf/Internal/RepeatedField.php
   src/Google/Protobuf/Internal/RepeatedFieldIter.php
   

   Error: Deprecated: Return type of ... should either be compatible with ..., or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice ...
   About: https://php.watch/versions/8.1/internal-method-return-types
   Fix: https://github.com/protocolbuffers/protobuf-php/commit/1fc16ac4b14107db52597c98b08a80a85a3167d5#diff-8682cfd5d8e5b2c098e2c5d1d36e5af7f972e8b6c645b0795454315c4bd1f0d7

Fix version is 3.22.0RC3 which released on Feb 10, 2023:
https://github.com/protocolbuffers/protobuf-php/releases/tag/v3.22.0RC3)
This version updates supported version to PHP 7.0:
https://github.com/protocolbuffers/protobuf-php/commit/1fc16ac4b14107db52597c98b08a80a85a3167d5#diff-d2ab9925cad7eac58e0ff4cc0d251a937ecf49e4b6bf57f8b95aab76648a9d34

Preferred Solution

Update version of google/protobuf at least to 3.22.0 which has been released on Feb 16, 2023:
https://github.com/protocolbuffers/protobuf-php/releases/tag/v3.22.0

If the feature request is approved, would you be willing to submit a PR?

Yes if you tell me how to test it that nothing will be broken after update the version of google/protobuf.

Locate where this repository declares its google/protobuf dependency, then review the listed MapField, MapFieldIter, RepeatedField, and RepeatedFieldIter files against the 3.22.0 update. Update the dependency to at least 3.22.0 and verify the existing project checks cover PHP 8.1/8.2 deprecation compatibility without breaking the SDK.