update examples to show @v5

Author: ahpook

README.md

@@ -72,7 +72,7 @@ You can install the action on any public repository, or any organization-owned p
          - name: 'Checkout Repository'
            uses: actions/checkout@v6
          - name: 'Dependency Review'
-           uses: actions/dependency-review-action@v4
+           uses: actions/dependency-review-action@v5
    ```
 
 #### Installation (GitHub Enterprise Server)
@@ -97,7 +97,7 @@ You can install the action on repositories on GitHub Enterprise Server.
          - name: 'Checkout Repository'
            uses: actions/checkout@v6
          - name: 'Dependency Review'
-           uses: actions/dependency-review-action@v4
+           uses: actions/dependency-review-action@v5
    ```
 
 4. In the workflow file, replace the `runs-on` value with the label of any of your runners. (The default value is `self-hosted`.)
@@ -166,7 +166,7 @@ You can pass configuration options to the dependency review action using your wo
          - name: 'Checkout Repository'
            uses: actions/checkout@v6
          - name: Dependency Review
-           uses: actions/dependency-review-action@v4
+           uses: actions/dependency-review-action@v5
            with:
              fail-on-severity: moderate
 
@@ -193,7 +193,7 @@ You can use an external configuration file to specify settings for this action.
          - name: 'Checkout Repository'
            uses: actions/checkout@v6
          - name: Dependency Review
-           uses: actions/dependency-review-action@v4
+           uses: actions/dependency-review-action@v5
            with:
              config-file: './.github/dependency-review-config.yml'
    ```
@@ -206,7 +206,7 @@ You can use an external configuration file to specify settings for this action.
 
    ```yaml
    - name: Dependency Review
-     uses: actions/dependency-review-action@v4
+     uses: actions/dependency-review-action@v5
      with:
        config-file: 'github/octorepo/dependency-review-config.yml@main'
        external-repo-token: 'ghp_123456789abcde'