fix: update github actions & remove edx runner

.github/workflows/ci-static-analysis.yml

@@ -13,9 +13,9 @@ jobs:
         os: ['ubuntu-20.04']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -31,7 +31,7 @@ jobs:
 
       - name: Cache pip dependencies
         id: cache-dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.pip-cache-dir.outputs.dir }}
           key: ${{ runner.os }}-pip-${{ hashFiles('requirements/edx/development.txt') }}