fix: upgrade Testcontainers to 1.20.1 and fix Docker Desktop compatibility on Windows

- Upgrade testContainersVersion from 1.17.6 to 1.20.1
- Override DOCKER_HOST to docker_engine_linux pipe to bypass Docker Desktop relay
- Add docker-java.properties with api.version=1.41 to satisfy Docker daemon minimum API requirement (1.40+)
- Replace deprecated getContainerIpAddress() with getHost() in MongoDbContainer

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sundancekid73

build.gradle

@@ -17,7 +17,7 @@ ext {
     lombokVersion = '1.18.22'
     springBootVersion = '2.4.5'
     springSecurityVersion = '5.4.6'
-    testContainersVersion = '1.15.3'
+    testContainersVersion = '1.20.1'
     swaggerVersion = '2.9.2'
 }
 
@@ -63,6 +63,7 @@ sourceSets {
 test {
     useJUnitPlatform()
     finalizedBy jacocoTestReport
+    environment 'DOCKER_HOST', 'npipe:////./pipe/docker_engine_linux'
 }
 
 jacoco {

src/test/java/net/gendercomics/api/integrationtest/MongoDbContainer.java

@@ -13,7 +13,7 @@ public MongoDbContainer(DockerImageName dockerImageName) {
     }
 
     public String getUri() {
-        final String ip = this.getContainerIpAddress();
+        final String ip = this.getHost();
         final Integer port = this.getMappedPort(PORT);
         return String.format("mongodb://%s:%s/test", ip, port);
     }

src/test/resources/docker-java.properties

@@ -0,0 +1 @@
+api.version=1.41