Update D2 to 0.7.0 & add new C4 theme (#1890)

Author: ltsallas

docs/antora.yml

@@ -8,7 +8,7 @@ asciidoc:
     bpmn-version: 18.6.1
     bytefield-version: 1.11.0
     c4plantuml-version: 1.2025.0
-    d2-version: 0.6.9
+    d2-version: 0.7.0
     dbml-version: 1.0.30
     diagramsnet-version: 16.2.4
     ditaa-version: 1.0.3

server/ops/docker/jdk17-noble/Dockerfile

@@ -179,7 +179,7 @@ FROM ghcr.io/yuzutech/erd:v0.2.3 AS erd
 FROM eclipse-temurin:17.0.14_7-jre-noble
 
 ARG BLOCKDIAG_VERSION="3.1.0"
-ARG D2_VERSION="0.6.9"
+ARG D2_VERSION="0.7.0"
 ARG DITAA_VERSION="1.0.3"
 ARG DVISVGM_VERSION="3.2.1+ds-1build1"
 ARG GRAPHVIZ_VERSION="9.0.0"

server/src/main/java/io/kroki/server/service/D2.java

@@ -46,7 +46,8 @@ public class D2 implements DiagramService {
     entry("dark-flagship-terrastruct", 201),
     entry("terminal", 300),
     entry("terminal-grayscale", 301),
-    entry("origami", 302)
+    entry("origami", 302),
+    entry("c4", 303)
   );
 
   public D2(Vertx vertx, JsonObject config, Commander commander) {
@@ -73,7 +74,7 @@ public SourceDecoder getSourceDecoder() {
 
   @Override
   public String getVersion() {
-    return "0.6.9";
+    return "0.7.0";
   }
 
   @Override