🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

handwritten/logging/.trampolinerc

@@ -19,6 +19,8 @@ required_envvars+=()
 
 # Add env vars which are passed down into the container here.
 pass_down_envvars+=(
+    "ENVIRONMENT"
+    "RUNTIME"
     "ENVIRONMENT"
     "RUNTIME"
     "AUTORELEASE_PR"