chore: Run with v4.29.4

lqiu96 · lqiu96 · commit d69c9f26009c · 2025-05-07T14:23:28.000-04:00
diff --git a/.kokoro/build.sh b/.kokoro/build.sh
@@ -67,6 +67,7 @@ javadoc)
 integration)
     mvn -B ${INTEGRATION_TEST_ARGS} \
       -ntp \
+      -Dprotobuf.version=4.29.4 \
       -Penable-integration-tests \
       -DtrimStackTrace=false \
       -Dclirr.skip=true \
