chore(deps): update protobufversion to v3.21.1

Author: renovate[bot]

build.gradle

@@ -40,7 +40,7 @@ allprojects {
         catsEffectVersion = "2.5.4"
         fs2Version = "2.5.3"
         metricsVersion = "2.9.3"
-        protobufVersion = "3.20.1"
+        protobufVersion = "3.21.1"
         pureconfigVersion = "0.17.1"
         scalapbVersion = "0.11.8"
         scalapbJson4sVersion = "0.11.1"