updated Python version to 3.13 in GitHub Actions workflow

Author: rongxin-liu

.github/workflows/main.yml

@@ -3,43 +3,43 @@ jobs:
   test-and-deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
-      with:
-        python-version: '3.10'
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
 
-    - name: Run tests
-      run: |
-        pip install .
-        style50 --help
+      - name: Run tests
+        run: |
+          pip install .
+          style50 --help
 
-    - name: Install pypa/build
-      run: python -m pip install build --user
+      - name: Install pypa/build
+        run: python -m pip install build --user
 
-    - name: Build a binary wheel and a source tarball
-      run: python -m build --sdist --wheel --outdir dist/ .
+      - name: Build a binary wheel and a source tarball
+        run: python -m build --sdist --wheel --outdir dist/ .
 
-    - name: Deploy to PyPI
-      if: ${{ github.ref == 'refs/heads/main' }}
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.PYPI_API_TOKEN }}
+      - name: Deploy to PyPI
+        if: ${{ github.ref == 'refs/heads/main' }}
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
 
-    - name: Extract program version
-      id: program_version
-      run: |
-        echo ::set-output name=version::$(style50 --version | cut --delimiter ' ' --fields 2)
+      - name: Extract program version
+        id: program_version
+        run: |
+          echo ::set-output name=version::$(style50 --version | cut --delimiter ' ' --fields 2)
 
-    - name: Create Release
-      if: ${{ github.ref == 'refs/heads/main' }}
-      uses: actions/github-script@v7
-      with:
-        github-token: ${{ github.token }}
-        script: |
-          github.rest.repos.createRelease({
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            tag_name: "v${{ steps.program_version.outputs.version }}",
-            tag_commitish: "${{ github.sha }}"
-          })
+      - name: Create Release
+        if: ${{ github.ref == 'refs/heads/main' }}
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ github.token }}
+          script: |
+            github.rest.repos.createRelease({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              tag_name: "v${{ steps.program_version.outputs.version }}",
+              tag_commitish: "${{ github.sha }}"
+            })