Start building against Spring Framework 6.0.0-M5 snapshots

See gh-31241

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -1381,7 +1381,7 @@ bom {
 			]
 		}
 	}
-	library("Spring Framework", "6.0.0-M4") {
+	library("Spring Framework", "6.0.0-SNAPSHOT") {
 		group("org.springframework") {
 			imports = [
 				"spring-framework-bom"

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/java/org/springframework/boot/maven/AotGenerateTests.java

@@ -46,6 +46,8 @@ public class AotGenerateTests {
 							"reflect-config.json"),
 					Path.of("META-INF", "native-image", "org.springframework.boot.maven.it", "aot",
 							"resource-config.json"),
+					Path.of("META-INF", "native-image", "org.springframework.boot.maven.it", "aot",
+							"proxy-config.json"),
 					Path.of("META-INF", "native-image", "org.springframework.boot.maven.it", "aot",
 							"native-image.properties"));
 		});
@@ -67,6 +69,7 @@ public class AotGenerateTests {
 			assertThat(collectRelativePaths(classesDirectory)).contains(
 					Path.of("org.springframework.boot.maven.it", "aot", "reflect-config.json"),
 					Path.of("org.springframework.boot.maven.it", "aot", "resource-config.json"),
+					Path.of("org.springframework.boot.maven.it", "aot", "proxy-config.json"),
 					Path.of("org.springframework.boot.maven.it", "aot", "native-image.properties"));
 		});
 	}