build(deps): bump github.com/decred/dcrd/dcrec/secp256k1/v4

Bumps [github.com/decred/dcrd/dcrec/secp256k1/v4](https://github.com/decred/dcrd) from 4.3.0 to 4.4.0.
- [Release notes](https://github.com/decred/dcrd/releases)
- [Changelog](https://github.com/decred/dcrd/blob/master/CHANGES)
- [Commits](decred/dcrd@dcrec/secp256k1/v4.3.0...dcrec/secp256k1/v4.4.0)

---
updated-dependencies:
- dependency-name: github.com/decred/dcrd/dcrec/secp256k1/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -1,7 +1,7 @@
 module github.com/ecies/go/v2
 
 require (
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0
 	github.com/ethereum/go-ethereum v1.15.1
 	github.com/stretchr/testify v1.10.0
 	golang.org/x/crypto v0.33.0

go.sum

@@ -1,7 +1,7 @@
 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/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0 h1:NMZiJj8QnKe1LgsbDayM4UoHwbvwDRwnI3hwNaAHRnc=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0/go.mod h1:ZXNYxsqcloTdSy/rNShjYzMhyjf0LaoftYK0p+A3h40=
 github.com/ethereum/go-ethereum v1.15.1 h1:ZR5hh6NXem4hNnhMIrdPFMTGHo6USTwWn47hbs6gRj4=
 github.com/ethereum/go-ethereum v1.15.1/go.mod h1:wGQINJKEVUunCeoaA9C9qKMQ9GEOsEIunzzqTUO2F6Y=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=