chore: update to latest blst

The latest version fixes the redefinition of methods on external types
compile-time error.

Author: mark-rushakoff

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/neilotoole/slogt v1.1.0
 	github.com/spf13/cobra v1.8.1
 	github.com/stretchr/testify v1.10.0
-	github.com/supranational/blst v0.3.13
+	github.com/supranational/blst v0.3.15
 	github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c
 	golang.org/x/crypto v0.32.0
 	golang.org/x/tools v0.29.0

go.sum

@@ -433,8 +433,8 @@ github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXl
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/supranational/blst v0.3.13 h1:AYeSxdOMacwu7FBmpfloBz5pbFXDmJL33RuwnKtmTjk=
-github.com/supranational/blst v0.3.13/go.mod h1:jZJtfjgudtNl4en1tzwPIV3KjUnQUvG3/j+w+fVonLw=
+github.com/supranational/blst v0.3.15 h1:rd9viN6tfARE5wv3KZJ9H8e1cg0jXW8syFCcsbHa76o=
+github.com/supranational/blst v0.3.15/go.mod h1:jZJtfjgudtNl4en1tzwPIV3KjUnQUvG3/j+w+fVonLw=
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c h1:u6SKchux2yDvFQnDHS3lPnIRmfVJ5Sxy3ao2SIdysLQ=
 github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c/go.mod h1:hzIxponao9Kjc7aWznkXaL4U4TWaDSs8zcsY4Ka08nM=