automation - fix next snapshot action

Author: frantuma

.github/workflows/next-snapshot.yml

@@ -55,7 +55,12 @@ jobs:
         git config --global user.email "[email protected]"
         git config --global user.name "GitHub Action"
         git config --global hub.protocol https
-        git remote set-url origin https://\${{ secrets.GITHUB_TOKEN }}:[email protected]/''' + 'swagger-api/swagger-parser' + '''.git
+        git remote set-url origin https://\${{ secrets.GITHUB_TOKEN }}:[email protected]/swagger-api/swagger-parser.git
+    - name: Checkout master
+      uses: actions/checkout@v2
+      with:
+        ref: "master"
+        fetch-depth: 0
     - name: Run next snapshot script
       id: postRelease
       if: env.RELEASE_OK == 'yes'