chore: update e2e test configuration for Cardano node '9.1.0'

- 'mithril_run_interval' from '150' to '125'
- 'cardano_epoch_length' from '30' to '35'.

Author: jpraynaud

mithril-test-lab/mithril-end-to-end/src/main.rs

@@ -53,7 +53,7 @@ pub struct Args {
     cardano_slot_length: f64,
 
     /// Length of a Cardano epoch in the devnet (in s)
-    #[clap(long, default_value_t = 30.0)]
+    #[clap(long, default_value_t = 35.0)]
     cardano_epoch_length: f64,
 
     /// Cardano node version
@@ -65,7 +65,7 @@ pub struct Args {
     cardano_hard_fork_latest_era_at_epoch: u16,
 
     /// Mithril run interval for nodes (in ms)
-    #[clap(long, default_value_t = 150)]
+    #[clap(long, default_value_t = 125)]
     mithril_run_interval: u32,
 
     /// Mithril era to run