Update python version in github actions

Author: soimkim

.github/workflows/publish-release.yml

@@ -60,7 +60,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.7'
+        python-version: '3.8'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/pull-request.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.8, 3.11]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}