fix: update min version to 3.9

Author: karthiknadig

.config/CredScanSuppressions.json

@@ -31,10 +31,10 @@ runs:
       uses: dtolnay/rust-toolchain@stable
 
     # Jedi LS depends on dataclasses which is not in the stdlib in Python 3.7.
-    - name: Use Python 3.8 for JediLSP
+    - name: Use Python 3.9 for JediLSP
       uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.9
         cache: 'pip'
         cache-dependency-path: |
           requirements.txt

.github/actions/build-vsix/action.yml

@@ -165,7 +165,7 @@ jobs:
         # macOS runners are expensive, and we assume that Ubuntu is enough to cover the Unix case.
         os: [ubuntu-latest, windows-latest]
         # Run the tests on the oldest and most recent versions of Python.
-        python: ['3.8', '3.x', '3.13-dev']
+        python: ['3.9', '3.x', '3.13']
 
     steps:
       - name: Checkout

.github/workflows/build.yml

@@ -147,7 +147,7 @@ jobs:
         # macOS runners are expensive, and we assume that Ubuntu is enough to cover the Unix case.
         os: [ubuntu-latest, windows-latest]
         # Run the tests on the oldest and most recent versions of Python.
-        python: ['3.8', '3.x', '3.13-dev'] # run for 3 pytest versions, most recent stable, oldest version supported and pre-release
+        python: ['3.9', '3.x', '3.13'] # run for 3 pytest versions, most recent stable, oldest version supported and pre-release
         pytest-version: ['pytest', 'pytest@pre-release', 'pytest==6.2.0']
 
     steps:

.github/workflows/pr-check.yml

@@ -71,7 +71,7 @@ extends:
 
       - task: UsePythonVersion@0
         inputs:
-          versionSpec: '3.8'
+          versionSpec: '3.9'
           addToPath: true
           architecture: 'x64'
         displayName: Select Python version

build/azure-pipeline.pre-release.yml

@@ -65,7 +65,7 @@ extends:
 
       - task: UsePythonVersion@0
         inputs:
-          versionSpec: '3.8'
+          versionSpec: '3.9'
           addToPath: true
           architecture: 'x64'
         displayName: Select Python version

build/azure-pipeline.stable.yml

@@ -1,4 +1,4 @@
 name: conda_env_1
 dependencies:
-  - python=3.8
+  - python=3.9
   - pip

build/ci/conda_env_1.yml

@@ -1,4 +1,4 @@
 name: conda_env_2
 dependencies:
-  - python=3.8
+  - python=3.9
   - pip