fix(ci): add Python 3.13 pre-release to test matrix (#257)

* GitHub Actions add Python 3.13 to test matrix

This version of Python is in beta now, and will be stable soonish.

* chore(ci): delete redundant macos-14 jobs from test matrix

macos-latest runners now resolve to macos-14.

(To be precise: the transition is still rolling out across some repos,
according to the announcement post, but workflows that have already
migrated won't switch back. The relevant workflows at this repo have
already migrated, so the explicit macos-14 jobs are now redundant
to the implicit macOS 14 (macos-latest) jobs, and can be removed
from the text matrix now.)

Making this change per review feedback on the PR.

Co-authored-by: Christian Clauss <cclauss@me.com>

---------

Co-authored-by: Christian Clauss <cclauss@me.com>

.github/workflows/node-gyp.yml

@@ -10,11 +10,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, macos-14, ubuntu-latest, windows-latest]
-        python: ["3.8", "3.10", "3.12"]
-        exclude:
-          - os: macos-14
-            python: "3.8"
+        os: [macos-latest, ubuntu-latest, windows-latest]
+        python: ["3.8", "3.10", "3.12", "3.13"]
 
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/python_tests.yml

@@ -15,13 +15,8 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        os: [macos-latest, macos-14, ubuntu-latest] # , windows-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
-        exclude:
-          - os: macos-14
-            python-version: "3.8"
-          - os: macos-14
-            python-version: "3.9"
+        os: [macos-latest, ubuntu-latest] # , windows-latest]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}