Bump github.com/nil-go/konf from 1.2.0 to 1.2.1 in /grpc

Bumps [github.com/nil-go/konf](https://github.com/nil-go/konf) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/nil-go/konf/releases)
- [Changelog](https://github.com/nil-go/konf/blob/main/CHANGELOG.md)
- [Commits](nil-go/konf@v1.2.0...v1.2.1)

---
updated-dependencies:
- dependency-name: github.com/nil-go/konf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

grpc/go.mod

@@ -3,7 +3,7 @@ module github.com/nil-go/nilgo/grpc
 go 1.21
 
 require (
-	github.com/nil-go/konf v1.2.0
+	github.com/nil-go/konf v1.2.1
 	github.com/nil-go/sloth v0.3.0
 	github.com/stretchr/testify v1.9.0
 	google.golang.org/grpc v1.65.0

grpc/go.sum

@@ -8,8 +8,8 @@ github.com/envoyproxy/protoc-gen-validate v1.0.4 h1:gVPz/FMfvh57HdSJQyvBtF00j8JU
 github.com/envoyproxy/protoc-gen-validate v1.0.4/go.mod h1:qys6tmnRsYrQqIhm2bvKZH4Blx/1gTIZ2UKVY1M+Yew=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/nil-go/konf v1.2.0 h1:jm9x6Zi3//lOcafo/tiJydQXaDn+hoheLVYJhRqpLak=
-github.com/nil-go/konf v1.2.0/go.mod h1:ULW6PmJzWMd0F4KKNJQPhWD6Zu5eoX9U1C9SW2BPAr4=
+github.com/nil-go/konf v1.2.1 h1:2sfvMULF7gUhteuKds1OdZ5tYdD792L0j69b+RoHgSo=
+github.com/nil-go/konf v1.2.1/go.mod h1:ULW6PmJzWMd0F4KKNJQPhWD6Zu5eoX9U1C9SW2BPAr4=
 github.com/nil-go/sloth v0.3.0 h1:lAqd8/pH6psoXZDpScCefY+3V9PVfJnIyOqMK1GSvwo=
 github.com/nil-go/sloth v0.3.0/go.mod h1:SE8dLU9DLYeuLtu3kHp9PUEyj0OwUGKvTjSpx8tPdwo=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=