chore(gitignore): 🤔 ignore proposal.toml (#3987)

## describe your changes

this is generated by running the network integration tests.

this adds it to the gitignore, alongside `deployments/logs/`.

## checklist before requesting a review

- [x] If this code contains consensus-breaking changes, I have added the
"consensus-breaking" label.

.gitignore

@@ -40,8 +40,10 @@ tools/parameter-setup/Cargo.lock
 # Relayer config referencing local devnet, will always be unique
 # to current host env.
 deployments/relayer/configs/penumbra-local.json
-# Log files from smoke tests
+
+# Logs, and other files from smoke tests
 deployments/logs/
+crates/bin/pcli/proposal.toml
 
 # Memory profiler, via bytehound or otherwise
 *.dat