A few diverse fixes

.github/workflows/codeql.yml

@@ -6,7 +6,7 @@ on:
   pull_request:
     branches: [ "main" ]
   schedule:
-    - cron: "57 5 * * 3"
+    - cron: "57 5 * * 3"  # M H d m w (Every Wednesday at 5:57 AM)
 
 jobs:
   analyze:

.github/workflows/tests.yml

@@ -28,7 +28,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: [3.8, "3.10"]
+        python: [3.8, "3.10", 3.12]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -39,7 +39,7 @@ jobs:
       - run: tox -e py-all-extras
 
   unittest-omegaconf:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -50,7 +50,7 @@ jobs:
       - run: tox -e omegaconf
 
   doctest:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5

pyproject.toml

@@ -105,7 +105,6 @@ dev = [
     "jsonargparse[test]",
     "jsonargparse[coverage]",
     "jsonargparse[doc]",
-    "jsonargparse[mypy]",
     "pre-commit>=2.19.0",
     "tox>=3.25.0",
     "build>=0.10.0",