Update protobuf monorepo to v4.33.4 (#182)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle.kts

@@ -30,7 +30,7 @@ version = ver
 description = "Java Bindings for the OpenTelemetry Protocol (OTLP)"
 
 val grpcVersion = "1.78.0"
-val protobufVersion = "4.33.3"
+val protobufVersion = "4.33.4"
 
 repositories {
   mavenCentral()