Bump protoc from 3.19.4 to 3.20.0 (#172)

Bumps [protoc](https://github.com/protocolbuffers/protobuf) from 3.19.4 to 3.20.0.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.19.4...v3.20.0)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protoc
  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>

Author: dependabot[bot]

router-protobuf/build.gradle.kts

@@ -31,6 +31,6 @@ dependencies {
 protobuf {
     protoc {
         // The artifact spec for the Protobuf Compiler
-        artifact = "com.google.protobuf:protoc:3.19.4"
+        artifact = "com.google.protobuf:protoc:3.20.0"
     }
 }