[scp] Bump to 0.16.* (#16012)

Author: github-actions[bot]

stubs/scp/METADATA.toml

@@ -1,3 +1,3 @@
-version = "0.15.*"
+version = "0.16.*"
 upstream-repository = "https://github.com/jbardin/scp.py"
 dependencies = ["types-paramiko"]