Update dependabot metadata field

As of the last docs the metadata field is named `dependabot-metadata`

https://github.com/dependabot/fetch-metadata

Author: Andrew Luca

content/code-security/supply-chain-security/keeping-your-dependencies-updated-automatically/automating-dependabot-with-github-actions.md

@@ -184,9 +184,9 @@ jobs:
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
       # The following properties are now available:
-      #  - steps.metadata.outputs.dependency-names
-      #  - steps.metadata.outputs.dependency-type
-      #  - steps.metadata.outputs.update-type      
+      #  - steps.dependabot-metadata.outputs.dependency-names
+      #  - steps.dependabot-metadata.outputs.dependency-type
+      #  - steps.dependabot-metadata.outputs.update-type      
 ```
 {% endraw %}
 
@@ -219,7 +219,7 @@ jobs:
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
       - name: Add a label for all production dependencies
-        if: ${{ steps.metadata.outputs.dependency-type == 'direct:production' }}
+        if: ${{ steps.dependabot-metadata.outputs.dependency-type == 'direct:production' }}
         run: gh pr edit "$PR_URL" --add-label "production"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
@@ -282,7 +282,7 @@ jobs:
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
       - name: Enable auto-merge for Dependabot PRs
-        if: ${{contains(steps.metadata.outputs.dependency-names, 'my-dependency') && steps.metadata.outputs.update-type == 'version-update:semver-patch'}}
+        if: ${{contains(steps.dependabot-metadata.outputs.dependency-names, 'my-dependency') && steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch'}}
         run: gh pr merge --auto --merge "$PR_URL"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}