Update Spring gRPC to 1.0.0

This also updates the Gradle plugin to 0.9.5 and the Maven plugin to 4.0.3.

Drop support for Boot < 4.0.x

See gh-2002

Author: mhalbritter

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

@@ -28,7 +28,7 @@
  */
 abstract class AbstractGrpcGradleBuildCustomizer implements BuildCustomizer<GradleBuild> {
 
-	private static final String GRPC_PLUGIN_VERSION = "0.9.4";
+	private static final String GRPC_PLUGIN_VERSION = "0.9.5";
 
 	private final char quote;
 

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

@@ -29,7 +29,7 @@
  */
 class GrpcMavenBuildCustomizer implements BuildCustomizer<MavenBuild> {
 
-	private static final String PROTOBUF_PLUGIN_VERSION = "3.10.2";
+	private static final String PROTOBUF_PLUGIN_VERSION = "4.0.3";
 
 	private final String protobufJavaVersion;
 

start-site/src/main/resources/application.yml

@@ -142,7 +142,7 @@ initializr:
         versionProperty: spring-grpc.version
         mappings:
           - compatibilityRange: "[4.0.0,4.1.0-M1)"
-            version: 1.0.0-RC1
+            version: 1.0.0
       spring-modulith:
         groupId: org.springframework.modulith
         artifactId: spring-modulith-bom

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

@@ -65,7 +65,7 @@ void shouldAddAdditionalDependenciesForGradle() {
 	void shouldAddGrpcPluginAndConfigurationForGradleGroovy() {
 		ProjectRequest request = createProjectRequest(BOOT_VERSION, SPRING_GRPC);
 		request.setType("gradle-project");
-		assertThat(gradleBuild(request)).hasPlugin("com.google.protobuf", "0.9.4").containsIgnoringWhitespaces("""
+		assertThat(gradleBuild(request)).hasPlugin("com.google.protobuf", "0.9.5").containsIgnoringWhitespaces("""
 				protobuf {
 					protoc {
 						artifact = 'com.google.protobuf:protoc'
@@ -90,7 +90,7 @@ void shouldAddGrpcPluginAndConfigurationForGradleGroovy() {
 	void shouldAddGrpcPluginAndConfigurationForGradleKotlin() {
 		ProjectRequest request = createProjectRequest(BOOT_VERSION, SPRING_GRPC);
 		request.setType("gradle-project-kotlin");
-		assertThat(gradleKotlinDslBuild(request)).hasPlugin("com.google.protobuf", "0.9.4")
+		assertThat(gradleKotlinDslBuild(request)).hasPlugin("com.google.protobuf", "0.9.5")
 			.contains("import com.google.protobuf.gradle.id")
 			.containsIgnoringWhitespaces("""
 					protobuf {
@@ -118,13 +118,13 @@ void shouldAddGrpcPluginAndConfigurationForGradleKotlin() {
 	@Test
 	void shouldAddProtobufPluginForMaven() {
 		ProjectRequest request = createProjectRequest(BOOT_VERSION, SPRING_GRPC);
-		assertThat(mavenPom(request)).hasProperty("grpc.version", "1.76.0")
-			.hasProperty("protobuf-java.version", "4.32.1")
+		assertThat(mavenPom(request)).hasProperty("grpc.version", "1.77.0")
+			.hasProperty("protobuf-java.version", "4.33.1")
 			.containsIgnoringWhitespaces("""
 					<plugin>
 						<groupId>io.github.ascopes</groupId>
 						<artifactId>protobuf-maven-plugin</artifactId>
-						<version>3.10.2</version>
+						<version>4.0.3</version>
 						<configuration>
 							<protocVersion>${protobuf-java.version}</protocVersion>
 							<binaryMavenPlugins>