fix: [#433] update v3.5.1 references to v3.11.2 in tests and docs

Author: josecelano

docs/security/docker/scans/README.md

@@ -11,7 +11,7 @@ This directory contains historical security scan results for Docker images used
 | `torrust/tracker-ssh-server`           | 3.23.3  | 0    | 0        | ✅ Remediated (vuln scan) | Apr 8, 2026 | [View](torrust-ssh-server.md)                   |
 | `torrust/tracker-provisioned-instance` | 24.04   | 0    | 0        | ✅ Remediated (vuln scan) | Apr 8, 2026 | [View](torrust-tracker-provisioned-instance.md) |
 | `caddy`                                | 2.10.2  | 14   | 4        | ⚠️ Partial remediation    | Apr 8, 2026 | [View](caddy.md)                                |
-| `prom/prometheus`                      | v3.5.1  | 6    | 4        | ⚠️ Partial remediation    | Apr 8, 2026 | [View](prometheus.md)                           |
+| `prom/prometheus`                      | v3.11.2 | 4    | 0        | ✅ Remediated             | Apr 14, 2026 | [View](prometheus.md)                          |
 | `grafana/grafana`                      | 12.4.2  | 4    | 0        | ⚠️ Partial remediation    | Apr 8, 2026 | [View](grafana.md)                              |
 | `mysql`                                | 8.4     | 7    | 1        | ⚠️ Monitored              | Apr 8, 2026 | [View](mysql.md)                                |
 

src/application/command_handlers/show/info/docker_images.rs

@@ -12,7 +12,7 @@ pub struct DockerImagesInfo {
     /// `MySQL` Docker image reference (e.g. `mysql:8.4`), present when `MySQL` is configured
     pub mysql: Option<String>,
 
-    /// Prometheus Docker image reference (e.g. `prom/prometheus:v3.5.1`), present when configured
+    /// Prometheus Docker image reference (e.g. `prom/prometheus:v3.11.2`), present when configured
     pub prometheus: Option<String>,
 
     /// Grafana Docker image reference (e.g. `grafana/grafana:12.4.2`), present when configured

src/infrastructure/templating/docker_compose/template/renderer/docker_compose.rs

@@ -407,8 +407,8 @@ mod tests {
             "Rendered output should contain prometheus service"
         );
         assert!(
-            rendered_content.contains("image: prom/prometheus:v3.5.1"),
-            "Should use Prometheus v3.5.0 image"
+            rendered_content.contains("image: prom/prometheus:v3.11.2"),
+            "Should use Prometheus v3.11.2 image"
         );
         assert!(
             rendered_content.contains("container_name: prometheus"),
@@ -466,7 +466,7 @@ mod tests {
 
         // Verify Prometheus service is NOT present
         assert!(
-            !rendered_content.contains("image: prom/prometheus:v3.5.1"),
+            !rendered_content.contains("image: prom/prometheus:v3.11.2"),
             "Should not contain Prometheus service when config absent"
         );
         assert!(

src/infrastructure/templating/docker_compose/template/wrappers/docker_compose/context/prometheus.rs

@@ -18,7 +18,7 @@ use super::service_topology::ServiceTopology;
 /// Uses `ServiceTopology` to share the common topology structure with other services.
 #[derive(Serialize, Debug, Clone)]
 pub struct PrometheusServiceContext {
-    /// Docker image reference (e.g. `prom/prometheus:v3.5.1`)
+    /// Docker image reference (e.g. `prom/prometheus:v3.11.2`)
     pub image: String,
 
     /// Service topology (ports and networks)