In cases where we observed a VAA, there is no possibility of gossip DoS.
Increase the timeout to 24 hours to facilitate manual interventions
(like submission of governance VAAs or node restarts/catchup).
Keep the existing five minute timeout for observation-less VAAs.
Change-Id: Ic626108190bd60cf812daadbe191b31cc48c7296
rustfmt appears to be a little more complicated since it wants to
download dependencies and needs nightly Rust.
Change-Id: Ia348def30a6459ae2ab6c29a8c3a413216f5eb4b