chore: Bump golang.org/x/crypto from 0.19.0 to 0.20.0

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.19.0 to 0.20.0.
- [Commits](golang/crypto@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -2,6 +2,6 @@ module github.com/matthewhartstonge/argon2
 
 go 1.18
 
-require golang.org/x/crypto v0.19.0
+require golang.org/x/crypto v0.20.0
 
 require golang.org/x/sys v0.17.0 // indirect

go.sum

@@ -1,4 +1,4 @@
-golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
-golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.20.0 h1:jmAMJJZXr5KiCw05dfYK9QnqaqKLYXijU23lsEdcQqg=
+golang.org/x/crypto v0.20.0/go.mod h1:Xwo95rrVNIoSMx9wa1JroENMToLWn3RNVrTBpLHgZPQ=
 golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=