fix(plasmavmc): Change metrics port from 9095 to 9102

Avoid potential port conflict with other services.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plasmavmc/crates/plasmavmc-server/src/main.rs

@@ -40,7 +40,7 @@ struct Args {
     firecracker_rootfs_path: Option<PathBuf>,
 
     /// Metrics port for Prometheus scraping
-    #[arg(long, default_value = "9095")]
+    #[arg(long, default_value = "9102")]
     metrics_port: u16,
 }