chore: update version to 2.6.1 in CONTRIBUTING.md, README.md, and flake.nix

Author: grishy

CONTRIBUTING.md

@@ -66,8 +66,8 @@ Please include:
 2. Create and push a tag:
 
    ```bash
-   git tag -a v2.6.0 -m "Release v2.6.0"
-   git push origin v2.6.0
+   git tag -a v2.6.1 -m "Release v2.6.1"
+   git push origin v2.6.1
    ```
 
 3. GitHub Actions will:

README.md

@@ -23,7 +23,7 @@ Redirect all subdomains to the machine (`*.hostname.local` → `hostname.local`)
 2. **Docker**:
 
    ```bash
-   docker run -d --network host -v "/var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket" ghcr.io/grishy/go-avahi-cname:2.6.0
+   docker run -d --network host -v "/var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket" ghcr.io/grishy/go-avahi-cname:2.6.1
    ```
 
    _Note:_ If you [encounter issues](https://github.com/grishy/go-avahi-cname/issues/28) with AppArmor, add `--security-opt apparmor=unconfined` to the Docker command or include the following in your Docker Compose file:
@@ -149,7 +149,7 @@ services:
       - apparmor=unconfined # required if AppArmor restricts access
     volumes:
       - "/var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket"
-    image: "ghcr.io/grishy/go-avahi-cname:2.6.0"
+    image: "ghcr.io/grishy/go-avahi-cname:2.6.1"
 ```
 
 If AppArmor denies access, include the `security_opt` section as shown above.
@@ -160,7 +160,7 @@ Ansible task to run the container:
 - name: go-avahi-cname | Start container
   community.docker.docker_container:
     name: "go-avahi-cname"
-    image: "ghcr.io/grishy/go-avahi-cname:2.6.0"
+    image: "ghcr.io/grishy/go-avahi-cname:2.6.1"
     restart_policy: unless-stopped
     network_mode: host
     security_opts:
@@ -198,9 +198,9 @@ sudo busctl monitor org.freedesktop.Avahi
 Reminder for me, just create a tag and push it.
 
 ```bash
-# Replace 2.6.0 with the new version in project
-git tag -a v2.6.0 -m "Release v2.6.0"
-git push origin v2.6.0
+# Replace 2.6.1 with the new version in project
+git tag -a v2.6.1 -m "Release v2.6.1"
+git push origin v2.6.1
 ```
 
 ## Source of inspiration

flake.nix

@@ -16,7 +16,7 @@
       system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-        version = "2.6.0";
+        version = "2.6.1";
       in
       {
         packages = {