Update workflow for Python versions

.github/workflows/dev.yml

@@ -20,15 +20,15 @@ jobs:
     # The type of runner that the job will run on
     strategy:
       matrix:
-        python-versions: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python-versions: ['3.8', '3.9', '3.10', '3.11', '3.12']
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
         with:
           python-version: ${{ matrix.python-versions }}
 

.github/workflows/preview.yml

@@ -18,11 +18,11 @@ jobs:
 
     strategy:
       matrix:
-        python-versions: [ 3.8 ]
+        python-versions: [ 3.12 ]
 
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
         with:
           python-version: ${{ matrix.python-versions }}
 

.github/workflows/release.yml

@@ -17,11 +17,11 @@ jobs:
   # This workflow contains a single job called "release"
   release:
     name: Create Release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        python-versions: [3.8]
+        python-versions: [3.12]
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
@@ -42,7 +42,7 @@ jobs:
           version: ${{ steps.tag_name.outputs.current_version }}
           path: ./CHANGELOG.md
 
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
         with:
           python-version: ${{ matrix.python-versions }}
 

tox.ini

@@ -1,15 +1,15 @@
 [tox]
 isolated_build = true
-envlist = py37, py38, py39, py310, py311, py312, format, lint, build
+envlist = py38, py39, py310, py311, py312, format, lint, build
 
 [gh-actions]
 python =
+    3.13: py313
     3.12: py312
     3.11: py311
     3.10: py310
     3.9: py39
     3.8: py38, format, lint, build
-    3.7: py37
 
 [testenv]
 allowlist_externals = pytest