chore: test with protobuf 4.29 [no need to review]

ldetmer · web-flow · commit 5a6a4ce6804e · 2025-05-16T15:16:44.000-04:00
diff --git a/.kokoro/build.sh b/.kokoro/build.sh
@@ -82,6 +82,7 @@ integration)
       -Dcheckstyle.skip=true \
       -DskipUnitTests=true \
       -Dfmt.skip=true \
+      -Dprotobuf.version=4.29.4 \
       -fae \
       verify
     RETURN_CODE=$?
