Update reddsa dependency

Earlier in this PR we updated the pasta_crate with a small refactor. The
updated crate also had a separate bugfix to the GroupHash implementation
which caused generators to change. Rust happily pulled in both versions
of pasta_curves, causing the ValueCommit proptests to fail because bsk
was generated with different bases in this crate and reddsa.

Cargo.toml

@@ -38,7 +38,7 @@ rev = "b55a6960dfafd7f767e2820ddf1adaa499322f98"
 
 [dependencies.reddsa]
 git = "https://github.com/str4d/redjubjub.git"
-rev = "f8ff124a52d86e122e0705e8e9272f2099fe4c46"
+rev = "62a26a02fda5165b68a4b4773aa18ea6eb749dbc"
 
 [dev-dependencies]
 criterion = "0.3"