Add missing --stamp flag for embedding version label
For
@@ -1117,7 +1117,7 @@ def execute_commands(
bazel_version,
bazel_binary,
platform,
- build_flags + ["--embed_label=%s" % get_release_name_from_branch_name()] if save_but else [],
+ build_flags + ["--stamp", "--embed_label=%s" % get_release_name_from_branch_name()] if save_but else [],
build_targets,
None,
incompatible_flags,
