chore(deps): bump google.golang.org/grpc from 1.63.2 to 1.64.0 (#81)

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.63.2 to 1.64.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.63.2...v1.64.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -3,14 +3,14 @@ module go.flipt.io/flipt-grpc
 go 1.17
 
 require (
-	google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de
-	google.golang.org/grpc v1.63.2
+	google.golang.org/genproto/googleapis/api v0.0.0-20240318140521-94a12d6c2237
+	google.golang.org/grpc v1.64.0
 	google.golang.org/protobuf v1.34.1
 )
 
 require (
 	golang.org/x/net v0.23.0 // indirect
 	golang.org/x/sys v0.18.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237 // indirect
 )