readme: update to v4

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

README.md

@@ -40,17 +40,14 @@ jobs:
   buildx:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v5
       -
         # Add support for more platforms with QEMU (optional)
         # https://github.com/docker/setup-qemu-action
         name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v4
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 ```
 
 ## Configuring your builder
@@ -133,23 +130,6 @@ The following [official docker environment variables](https://docs.docker.com/en
 
 ### `nodes` output
 
-```json
-[
-  {
-     "name": "builder-3820d274-502c-4498-ae24-d4c32b3023d90",
-     "endpoint": "unix:///var/run/docker.sock",
-     "driver-opts": [
-       "network=host",
-       "image=moby/buildkit:master"
-     ],
-    "status": "running",
-    "buildkitd-flags": "--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host",
-    "buildkit": "3fab389",
-    "platforms": "linux/amd64,linux/amd64/v2,linux/amd64/v3,linux/amd64/v4,linux/386"
-  }
-]
-```
-
 | Name              | Type   | Description                |
 |-------------------|--------|----------------------------|
 | `name`            | String | Node name                  |
@@ -160,6 +140,21 @@ The following [official docker environment variables](https://docs.docker.com/en
 | `buildkit`        | String | BuildKit version           |
 | `platforms`       | String | Platforms available        |
 
+Example:
+
+```json
+[
+  {
+    "name": "builder-8fa135e1-9bce-4a29-9368-46a09a1d750d0",
+    "endpoint": "unix:///var/run/docker.sock",
+    "status": "running",
+    "buildkitd-flags": "--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host",
+    "buildkit": "v0.27.1",
+    "platforms": "linux/amd64,linux/amd64/v2,linux/amd64/v3,linux/386"
+  }
+]
+```
+
 ## Contributing
 
 Want to contribute? Awesome! You can find information about contributing to