Remove Python 3.9 support from CI workflows and update target versions

Co-authored-by: bhashemian <3968947+bhashemian@users.noreply.github.com>

Author: Copilot

.github/workflows/pythonapp.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v6
       - name: Set up Python
@@ -54,7 +54,7 @@ jobs:
       MONAI_ZOO_AUTH_TOKEN: ${{ github.token }}
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v6
       - name: Set up Python
@@ -88,7 +88,7 @@ jobs:
       MONAI_ZOO_AUTH_TOKEN: ${{ github.token }}
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v6
         with:

pyproject.toml

@@ -19,7 +19,7 @@ requires = [
 
 [tool.black]
 line-length = 120
-target-version = ['py36', 'py37', 'py38']
+target-version = ['py310', 'py311', 'py312']
 include = '\.pyi?$'
 exclude = '''
 (