docs: Add note about flag for protoc 3.12.x - 3.14.x (#6209)

- The `--experimental_allow_proto3_optional` flag is needed to run the authorization code generation script (found in `authorization/README.md`) for protoc versions 3.12.x to 3.14.x
deephaven · Oct 18, 2024 · e2937f5 · e2937f5
1 parent 9d5006f
commit e2937f5
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/authorization/README.md b/authorization/README.md
@@ -56,4 +56,6 @@ DEEPHAVEN_VERSION=${DEEPHAVEN_VERSION}  PATH=authorization-codegen:$PATH protoc
      $ROOT_DIR/health.proto
 
 ./gradlew :authorization:spotlessApply
-```
+```
+
+For protoc versions 3.12.x - 3.14.x, the `--experimental_allow_proto3_optional` flag is needed.