Manually bump helm v3.16.4 (#605)

* Bump the version

* Fix the validate script.

* Need to bump opentelemetry as well.

scripts/validate.sh

@@ -1,13 +1,14 @@
 #!/bin/bash
 
 set -e
-go generate ./..
+go generate ./...
 golangci-lint run
 go mod tidy
 go mod verify
 unclean=$(git status --porcelain --untracked-files=no)
 if [ -n "$unclean" ]; then
   echo "Encountered dirty repo!"
+  git diff
   echo "$unclean"
   exit 1
 fi