Add/update Python version to 3.12 in GitHub workflows

The explicit Python version in release and test workflows has been updated from 3.11 to 3.12. This includes updates in pre-commit, safety, tests, and doc-build sessions across different operating systems. The changes allow these sessions to use the newer version of Python for task execution.

Author: tasansal

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - name: Upgrade pip
         run: |

.github/workflows/tests.yml

@@ -12,20 +12,21 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { python: "3.11", os: "ubuntu-latest", session: "pre-commit" }
-          - { python: "3.11", os: "ubuntu-latest", session: "safety" }
+          - { python: "3.12", os: "ubuntu-latest", session: "pre-commit" }
+          - { python: "3.12", os: "ubuntu-latest", session: "safety" }
           #          - { python: "3.11", os: "ubuntu-latest", session: "mypy" }
           #          - { python: "3.10", os: "ubuntu-latest", session: "mypy" }
           #          - { python: "3.9", os: "ubuntu-latest", session: "mypy" }
+          - { python: "3.12", os: "ubuntu-latest", session: "tests" }
           - { python: "3.11", os: "ubuntu-latest", session: "tests" }
           - { python: "3.10", os: "ubuntu-latest", session: "tests" }
           - { python: "3.9", os: "ubuntu-latest", session: "tests" }
-          - { python: "3.11", os: "windows-latest", session: "tests" }
-          - { python: "3.11", os: "macos-latest", session: "tests" }
+          - { python: "3.12", os: "windows-latest", session: "tests" }
+          - { python: "3.12", os: "macos-latest", session: "tests" }
           #          - { python: "3.11", os: "ubuntu-latest", session: "typeguard" }
           #          - { python: "3.10", os: "ubuntu-latest", session: "typeguard" }
           #          - { python: "3.10", os: "ubuntu-latest", session: "xdoctest" }
-          - { python: "3.11", os: "ubuntu-latest", session: "docs-build" }
+          - { python: "3.12", os: "ubuntu-latest", session: "docs-build" }
 
     env:
       NOXSESSION: ${{ matrix.session }}