Support for Protobuf 4.x

This commit compiles our Protobuf against 4.27, effectively raising our
baseline to 3.9+.

This commit also re-generates all the Java messages from the .proto spec
using the latest protoc binary.

Closes gh-33011

Author: bclozel

framework-platform/framework-platform.gradle

@@ -31,7 +31,7 @@ dependencies {
 		api("com.google.code.findbugs:findbugs:3.0.1")
 		api("com.google.code.findbugs:jsr305:3.0.2")
 		api("com.google.code.gson:gson:2.10.1")
-		api("com.google.protobuf:protobuf-java-util:3.25.3")
+		api("com.google.protobuf:protobuf-java-util:4.27.1")
 		api("com.h2database:h2:2.2.224")
 		api("com.jayway.jsonpath:json-path:2.9.0")
 		api("com.rometools:rome:1.19.0")