Update google-protobuf requirement from ~> 3.25 to >= 3.25, < 5.0 (#193)

Updates the requirements on [google-protobuf](https://github.com/protocolbuffers/protobuf) to permit the latest version.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: google-protobuf
  dependency-type: direct:production
...

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Author: dependabot[bot]

sass-embedded.gemspec

@@ -38,5 +38,5 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 3.1.0'
 
-  spec.add_runtime_dependency 'google-protobuf', '~> 3.25'
+  spec.add_runtime_dependency 'google-protobuf', '>= 3.25', '< 5.0'
 end