GitHub actions: Ignore flake8 no longer supporting Python 3.7 (#2971)

.github/workflows/docs.yml

@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip

.github/workflows/strings.yml

@@ -21,10 +21,10 @@ jobs:
     name: Check gettext syntax
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -47,10 +47,10 @@ jobs:
     name: Spellcheck
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip

.github/workflows/style.yml

@@ -21,10 +21,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -42,10 +42,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -63,10 +63,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install Dependencies
         run: pip3 install licenseheaders
       - name: Run licenseheaders

.github/workflows/tests.yml

@@ -60,7 +60,7 @@ jobs:
       - name: Install system dependencies
         run: sudo apt update && sudo apt install gettext mariadb-client
       - name: Install Python dependencies
-        run: pip3 install -e ".[dev]" mysqlclient psycopg2-binary
+        run: pip3 install --ignore-requires-python -e ".[dev]" mysqlclient psycopg2-binary  # We ignore that flake8 needs newer python as we don't run flake8 during tests
         working-directory: ./src
       - name: Run checks
         run: python manage.py check