Protobuf >= 4.26 not supported

[PhilemonDev]

Protobuf did some refactoring in v4.26, and backwards compatibility has only partly been restored.
This leads to the Jackson Datatype Protobuf module throwing this error:
java.lang.NoClassDefFoundError: com/google/protobuf/GeneratedMessageV3$ExtendableMessageOrBuilder

This issue has been addressed in the protobuf repository, but of course, it would be better to provide support for newer versions instead of relying on backwards compatibility.