Update Python version to 3.9 and Airflow version to 2.9.1 across GitH…

…ub Actions workflows

- Changed Python version from 3.8 to 3.9 in build and publish workflows.
- Updated Airflow version from 2.7.1 to 2.9.1 in test workflows for improved compatibility and features.

.github/workflows/build_docs.yml

@@ -20,7 +20,7 @@ jobs:
     - uses: actions/setup-python@v2
       with:
         # Semantic version range syntax or exact version of a Python version
-        python-version: '3.8'
+        python-version: '3.9'
         architecture: 'x64'
     # Standard drop-in approach that should work for most people.
     - name: Install dependencies

.github/workflows/cornflow-client-publish-to-pypi.yml

@@ -14,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
-    - 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 wheel
       run: >-
         python -m

.github/workflows/cornflow-publish-to-pypi.yml

@@ -14,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
-    - 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 wheel
       run: >-
         python -m

.github/workflows/test_cornflow_client.yml

@@ -86,7 +86,7 @@ jobs:
           cd cornflow-server
           python -m venv afvenv
           source afvenv/bin/activate
-          AIRFLOW_VERSION=2.7.1
+          AIRFLOW_VERSION=2.9.1
           PYTHON_VERSION="$(python3 --version | cut -d " " -f 2 | cut -d "." -f 1-2)"
           CLIENT_BRANCH="${{ github.head_ref || github.ref_name }}"
           CONSTRAINT_URL="https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-${PYTHON_VERSION}.txt"

.github/workflows/test_cornflow_dags.yml

@@ -48,7 +48,7 @@ jobs:
         python -m pip install -U "git+https://github.com/baobabsoluciones/cornflow@${CLIENT_BRANCH}#subdirectory=libs/client"
     - name: Install airflow
       run: |
-        AIRFLOW_VERSION=2.7.1
+        AIRFLOW_VERSION=2.9.1
         PYTHON_VERSION="$(python3 --version | cut -d " " -f 2 | cut -d "." -f 1-2)"
         CLIENT_BRANCH="${{ github.head_ref || github.ref_name }}"
         CONSTRAINT_URL="https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-${PYTHON_VERSION}.txt"

.github/workflows/test_cornflow_server.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       max-parallel: 21
       matrix:
-        python-version: [3.8, 3.9, '3.10', '3.11', '3.12']
+        python-version: [3.9, '3.10', '3.11', '3.12']
         os: [ubuntu-latest]
 
     services: