fix(e2e): lighten updated protocol parameters

Reduce the number of lotteries played to get closer to the initial
parameter set, as the test only needs to exercise the parameters update.

Author: jpraynaud

mithril-test-lab/mithril-end-to-end/src/toolkit/exec.rs

@@ -102,9 +102,9 @@ impl ExecToolkit {
         aggregator.stop().await?;
         let protocol_parameters_new = match aggregate_signature_type {
             AggregateSignatureType::Concatenation => ProtocolParameters {
-                k: 145,
-                m: 210,
-                phi_f: 0.80,
+                k: 83,
+                m: 130,
+                phi_f: 0.75,
             },
             AggregateSignatureType::Snark => ProtocolParameters {
                 k: 7,