fix(deps): Update dependency com.google.protobuf:protobuf-java-util to v4.31.1 (#172)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [com.google.protobuf:protobuf-java-util](https://developers.google.com/protocol-buffers/) ([source](https://redirect.github.com/protocolbuffers/protobuf)) | dependencies | minor | `4.30.2` -> `4.31.1` |

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Author: cq-bot

build.gradle

@@ -24,7 +24,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 def grpcVersion = '1.72.0'
-def protobufVersion = '4.30.2'
+def protobufVersion = '4.31.1'
 def protocVersion = protobufVersion
 
 dependencies {