fix: Skip linter in the push event (#184)

Author: xmnlab

.github/workflows/main.yaml

@@ -52,9 +52,10 @@ jobs:
           poetry install
 
       - name: Linter
+        if: ${{ github.event_name == 'pull_request' }}
         run: |
           pre-commit install
-          pre-commit run --all-file
+          pre-commit run --all-file --verbose
 
       - name: Build the book
         run: |