Update codespell GitHub workflow.

https://github.com/codespell-project/actions-codespell

.github/workflows/spell_check.yml

@@ -7,19 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v2
-
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - name: Spell check
+      uses: codespell-project/actions-codespell@v2
       with:
-        python-version: '3.10'
-
-    - name: Install codespell
-      run: |
-        python -m pip install --upgrade pip
-        pip install codespell
-
-    - name: Run codespell
-      run: |
-        codespell .
+        ignore_words_file: "ignore_words.txt"