Update documentation

docs/examples.md

@@ -6,6 +6,7 @@
 - [Use case: Create a pull request to update X periodically](#use-case-create-a-pull-request-to-update-x-periodically)
   - [Update NPM dependencies](#update-npm-dependencies)
   - [Update Gradle dependencies](#update-gradle-dependencies)
+  - [Update Cargo dependencies](#update-cargo-dependencies)
   - [Update SwaggerUI for GitHub Pages](#update-swaggerui-for-github-pages)
   - [Spider and download a website](#spider-and-download-a-website)
 - [Use case: Create a pull request to update X by calling the GitHub API](#use-case-create-a-pull-request-to-update-x-by-calling-the-github-api)
@@ -183,6 +184,41 @@ jobs:
             branch: update-dependencies
 ```
 
+### Update Cargo dependencies
+
+The following workflow will create a pull request for Cargo dependencies.
+It optionally uses [`cargo-edit`](https://github.com/killercup/cargo-edit) to update `Cargo.toml` and keep it in sync with `Cargo.lock`.
+
+```yml
+name: Update Dependencies
+on:
+  schedule:
+    - cron:  '0 1 * * 1'
+jobs:
+  update-dep:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Update dependencies
+        run: |
+          cargo install cargo-edit
+          cargo update
+          cargo upgrade --to-lockfile
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        with:
+            token: ${{ secrets.PAT }}
+            commit-message: Update dependencies
+            title: Update dependencies
+            body: |
+              - Dependency updates
+  
+              Auto-generated by [create-pull-request][1]
+  
+              [1]: https://github.com/peter-evans/create-pull-request
+            branch: update-dependencies
+```
+
 ### Update SwaggerUI for GitHub Pages
 
 When using [GitHub Pages to host Swagger documentation](https://github.com/peter-evans/swagger-github-pages), this workflow updates the repository with the latest distribution of [SwaggerUI](https://github.com/swagger-api/swagger-ui).