feat: bump headscale minimum to 0.27

docs/install/docker.md

@@ -18,7 +18,7 @@ with Docker.
 ## Prerequisites
 
 - Docker and Docker Compose
-- Headscale version 0.26.0 or later installed and running
+- Headscale version 0.27.0 or later installed and running
 - A [completed configuration file](./index.md#configuration) for Headplane.
 
 ## Installation
@@ -132,7 +132,7 @@ services:
       # Read-only access to the Docker socket (or a proxy)
       - "/var/run/docker.sock:/var/run/docker.sock:ro"
   headscale:
-    image: headscale/headscale:0.26.0
+    image: headscale/headscale:0.27.1
     container_name: headscale
     restart: unless-stopped
     command: serve
@@ -239,7 +239,7 @@ services:
       - "traefik.http.routers.headplane.entrypoints=websecure"
       - "traefik.http.routers.headplane.tls=true"
   headscale:
-    image: headscale/headscale:0.26.0
+    image: headscale/headscale:0.27.1
     container_name: headscale
     restart: unless-stopped
     command: serve

docs/install/limited-mode.md

@@ -19,7 +19,7 @@ advanced features, making it suitable for local testing and development.
 ## Prerequisites
 
 - Docker (and optionally Docker Compose)
-- Headscale version 0.26.0 or later installed and running
+- Headscale version 0.27.0 or later installed and running
 - A [completed configuration file](/index.md#configuration) for Headplane.
 
 ## Installation

docs/install/native-mode.md

@@ -20,7 +20,7 @@ or prefer to avoid containers.
 - A Linux-based operating system (e.g, Ubuntu, Debian, CentOS, Fedora)
 - Go version 1.25.1 installed (only needed to build Headplane)
 - Node.js version 22.16.x and [pnpm](https://pnpm.io/) version 10.4.x installed
-- Headscale version 0.26.0 or later installed and running
+- Headscale version 0.27.0 or later installed and running
 - A [completed configuration file](./index.md#configuration) for Headplane.
 
 Before building and running Headplane, ensure that the directory defined in