Revert back to using docker compose v1 CLI for test fixtures (#100206) (#100216)

# Conflicts:
#	build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/testfixtures/TestFixturesPlugin.java

Author: mark-vieira

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/testfixtures/TestFixturesPlugin.java

@@ -114,6 +114,7 @@ public void execute(Task task) {
             composeExtension.getRemoveContainers().set(true);
             composeExtension.getCaptureContainersOutput()
                 .set(EnumSet.of(LogLevel.INFO, LogLevel.DEBUG).contains(project.getGradle().getStartParameter().getLogLevel()));
+            composeExtension.getUseDockerComposeV2().set(false);
             composeExtension.getExecutable()
                 .set(project.file("/usr/local/bin/docker-compose").exists() ? "/usr/local/bin/docker-compose" : "/usr/bin/docker-compose");