Update README examples

Update the examples in the README to use Node v20, as well as to use more recent versions (via tag) of the action itself.

README.md

@@ -20,7 +20,7 @@ with less time for pushes during action development and pulls during CI executio
 ### Docker container action
 
 This action builds an image from your Dockerfile, and pushes it to the Docker registry,
-and rewrites `action.yml#rans.image` by pushed tag.
+and rewrites `action.yml#runs.image` with the pushed tag.
 
 The job just pulls Docker image when using the action, and there's no time to build the Dockerfile.
 
@@ -36,7 +36,7 @@ The description `action.yml` can be read as `action.yaml`.
 #### Example (Step only)
 
 ```yaml
-- uses: satackey/push-prebuilt-action@v0.1
+- uses: satackey/push-prebuilt-action@v0.2
  with:
  push-branch: release-master
 ```
@@ -111,7 +111,7 @@ The artifacts must be in the dist/ directory and entrypoint must be dist/index.j
 #### Example (step only)
 
 ```yaml
-- uses: satackey/push-prebuilt-action@v0.1
+- uses: satackey/push-prebuilt-action@v0.2
  with:
  push-branch: release-<your_branch_name>
  docker-registry: docker.io
@@ -221,19 +221,19 @@ jobs:
 
  steps:
  - name: Setup node.js
- uses: actions/setup-node@v3
+ uses: actions/setup-node@v4
  with:
- node-version: 16.x
+ node-version: 20.x
 
  - name: Checkout
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
 
  - name: Output branch name
  id: name
  run: echo "##[set-output name=branch;]${GITHUB_REF#refs/heads/}"
 
  - name: Push
- uses: satackey/push-prebuilt-action@v0.1
+ uses: satackey/push-prebuilt-action@v0.2
  with:
  push-branch: release-${{ steps.name.outputs.branch }}
  # [optional] The commit can be tagged.
@@ -260,14 +260,14 @@ jobs:
 
  steps:
  - name: Checkout
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
 
  - name: Output branch name
  id: name
  run: echo "##[set-output name=branch;]${GITHUB_REF#refs/heads/}"
 
  - name: Push
- uses: satackey/push-prebuilt-action@v0.1
+ uses: satackey/push-prebuilt-action@v0.2
  with:
  push-branch: release-${{ steps.name.outputs.branch }}
  # [optional] The commit can be tagged.