deps: Upgrade Protobuf-Java to v3.25.8 (#3810)

upgrade protobuf-java to v3.25.8, [release
notes](https://github.com/protocolbuffers/protobuf/releases/tag/v25.8)

- update protobuf java to v3.25.8
- locally run `mvn compile -P update` from java-showcase to update
golden showcase files

Author: zhumin8

.cloudbuild/library_generation/library_generation.Dockerfile

@@ -37,7 +37,7 @@ RUN cp "/root/.m2/repository/com/google/api/gapic-generator-java/${DOCKER_GAPIC_
 FROM docker.io/library/python:3.13.2-slim@sha256:6b3223eb4d93718828223966ad316909c39813dee3ee9395204940500792b740 as final
 
 ARG OWLBOT_CLI_COMMITTISH=3a68a9c0de318784b3aefadcc502a6521b3f1bc5
-ARG PROTOC_VERSION=25.5
+ARG PROTOC_VERSION=25.8
 ARG GRPC_VERSION=1.71.0
 ENV HOME=/home
 ENV OS_ARCHITECTURE="linux-x86_64"

.cloudbuild/library_generation/library_generation_airlock.Dockerfile

@@ -38,7 +38,7 @@ RUN cp "/root/.m2/repository/com/google/api/gapic-generator-java/${DOCKER_GAPIC_
 FROM us-docker.pkg.dev/artifact-foundry-prod/docker-3p-trusted/python@sha256:afc139a0a640942491ec481ad8dda10f2c5b753f5c969393b12480155fe15a63 as final
 
 ARG OWLBOT_CLI_COMMITTISH=3a68a9c0de318784b3aefadcc502a6521b3f1bc5
-ARG PROTOC_VERSION=25.5
+ARG PROTOC_VERSION=25.8
 ARG GRPC_VERSION=1.71.0
 ENV HOME=/home
 ENV OS_ARCHITECTURE="linux-x86_64"

gapic-generator-java-pom-parent/pom.xml

@@ -31,7 +31,7 @@
     <google.http-client.version>1.47.0</google.http-client.version>
     <gson.version>2.12.1</gson.version>
     <guava.version>33.4.0-jre</guava.version>
-    <protobuf.version>3.25.5</protobuf.version>
+    <protobuf.version>3.25.8</protobuf.version>
     <opentelemetry.version>1.47.0</opentelemetry.version>
     <maven.compiler.release>8</maven.compiler.release>
     <errorprone.version>2.38.0</errorprone.version>

gax-java/dependencies.properties

@@ -26,7 +26,7 @@ version.gax_httpjson=2.66.1-SNAPSHOT
 # The protobuf version is only used for generating gradle files for showcase module,
 # not for self-service clients (from googleapis project).
 
-version.com_google_protobuf=3.25.5
+version.com_google_protobuf=3.25.8
 version.google_java_format=1.15.0
 version.io_grpc=1.71.0
 

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/Advice.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/config_change.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 /**

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/AdviceOrBuilder.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/config_change.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 public interface AdviceOrBuilder

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/AnnotationsProto.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/annotations.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 public final class AnnotationsProto {

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/AuthProto.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/auth.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 public final class AuthProto {

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/AuthProvider.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/auth.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 /**

java-common-protos/proto-google-common-protos/src/main/java/com/google/api/AuthProviderOrBuilder.java

@@ -16,7 +16,7 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/api/auth.proto
 
-// Protobuf Java Version: 3.25.5
+// Protobuf Java Version: 3.25.8
 package com.google.api;
 
 public interface AuthProviderOrBuilder