style: refine CI Workflow and Test Configurations

- Remove empty lines from the GitHub Actions CI workflow file

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.github/workflows/ci.yml

@@ -6,7 +6,6 @@ env:
   BAR: "FOO"
 
 jobs:
-
   testing01:
     name: default flag testing
     runs-on: ubuntu-latest
@@ -262,4 +261,3 @@ jobs:
           script_stop: true
           script: |
             echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login -u ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
-