Bump github.com/bsv-blockchain/go-sdk from 1.1.27 to 1.2.12

Bumps [github.com/bsv-blockchain/go-sdk](https://github.com/bsv-blockchain/go-sdk) from 1.1.27 to 1.2.12.
- [Release notes](https://github.com/bsv-blockchain/go-sdk/releases)
- [Changelog](https://github.com/bsv-blockchain/go-sdk/blob/master/CHANGELOG.md)
- [Commits](bsv-blockchain/go-sdk@v1.1.27...v1.2.12)

---
updated-dependencies:
- dependency-name: github.com/bsv-blockchain/go-sdk
  dependency-version: 1.2.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -1,11 +1,9 @@
 module github.com/bitcoinschema/go-bpu
 
-go 1.24.0
-
-toolchain go1.24.1
+go 1.24.3
 
 require (
-	github.com/bsv-blockchain/go-sdk v1.1.27
+	github.com/bsv-blockchain/go-sdk v1.2.12
 	github.com/stretchr/testify v1.11.1
 )
 

go.sum

@@ -1,5 +1,5 @@
-github.com/bsv-blockchain/go-sdk v1.1.27 h1:N7IGPvOLh4YpMGJLGmPj+6PabwI06x8tX4ZJ5u4rrp4=
-github.com/bsv-blockchain/go-sdk v1.1.27/go.mod h1:d0HXzhHy21t+7z+LBpDhGyJSBJb8S5HiAmHsBtRKddQ=
+github.com/bsv-blockchain/go-sdk v1.2.12 h1:t/50ONqCTgumJH82YbQ8iqdo30ezIACyuFgvyHbkX9A=
+github.com/bsv-blockchain/go-sdk v1.2.12/go.mod h1:1FWCWH+x6xc1kH9r6tuyRQqUomfrLBOQfdPesJZK/1k=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=