Update docs with deploy key (StyraInc#543)

.github/workflows/update-docs.yaml

@@ -19,23 +19,14 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Generate GitHub App Token
-        id: generate_token
-        uses: tibdex/github-app-token@v2
-        with:
-          app_id: ${{ secrets.PLATFORM_AUTOMATION_GH_APP_ID }}
-          private_key: ${{ secrets.PLATFORM_AUTOMATION_GH_APP_PEM_KEY }}
-
-      - name: Trigger Update in docs repo
+      - name: Save version
         run: |
-          curl -X "POST" "https://api.github.com/repos/StyraInc/docs/actions/workflows/update-regal.yaml/dispatches" \
-            -H 'Accept: application/vnd.github+json' \
-            -H 'Authorization: Bearer ${{ steps.generate_token.outputs.token }}' \
-            -H 'X-Github-Api-Version: 2022-11-28' \
-            -H 'Content-Type: application/json; charset=utf-8' \
-            -d '{
-              "ref": "main",
-              "inputs": {
-                "version": "latest"
-              }
-            }'
+          echo "VERSION={{ env.GITHUB_REF }}" > versions/regal
+
+      - name: Update docs
+        uses: leigholiver/commit-with-deploy-key@v1.0.3
+        with:
+          source: versions
+          destination_folder: versions
+          destination_repo: StyraInc/docs
+          deploy_key: ${{ secrets.STYRA_DOCS_DEPLOY_KEY }}