Replace deprecated 'protocVersion' with 'protoc'

See gh-2011

Signed-off-by: Nils Breunese <[email protected]>

Author: breun

start-site/src/main/java/io/spring/start/site/extension/dependency/springgrpc/GrpcMavenBuildCustomizer.java

@@ -58,7 +58,7 @@ private void addProtobufPlugin(MavenPluginContainer plugins, VersionProperty pro
 		plugins.add("io.github.ascopes", "protobuf-maven-plugin", (plugin) -> {
 			plugin.version(PROTOBUF_PLUGIN_VERSION);
 			plugin.configuration((configuration) -> {
-				configuration.add("protocVersion", "${%s}".formatted(protobufJava.toStandardFormat()));
+				configuration.add("protoc", "${%s}".formatted(protobufJava.toStandardFormat()));
 				configuration.add("binaryMavenPlugins", (builder) -> {
 					builder.add("binaryMavenPlugin", (binary) -> {
 						binary.add("groupId", "io.grpc");

start-site/src/test/java/io/spring/start/site/extension/dependency/springgrpc/SpringGrpcProjectGenerationConfigurationTests.java

@@ -126,7 +126,7 @@ void shouldAddProtobufPluginForMaven() {
 						<artifactId>protobuf-maven-plugin</artifactId>
 						<version>4.0.3</version>
 						<configuration>
-							<protocVersion>${protobuf-java.version}</protocVersion>
+							<protoc>${protobuf-java.version}</protoc>
 							<binaryMavenPlugins>
 								<binaryMavenPlugin>
 									<groupId>io.grpc</groupId>