test: remove deprecated Node.js and Python (nodejs#2868)

* test: remove deprecated node.js and python

Removed Node.js v14.x and Python v3.7. Also added Node.js v20.x.

* Update .github/workflows/tests.yml

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

---------

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

.github/workflows/tests.yml

@@ -13,14 +13,14 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - run: pip install --user ruff
-    - run: ruff --format=github --select="E,F,PLC,PLE,UP,W,YTT" --ignore="PLC1901,S101,UP031" --target-version=py37 .
+    - run: ruff --format=github --select="E,F,PLC,PLE,UP,W,YTT" --ignore="PLC1901,S101,UP031" --target-version=py38 .
   Tests:
     strategy:
       fail-fast: false
       max-parallel: 15
       matrix:
-        node: [14.x, 16.x, 18.x]
-        python: ["3.7", "3.9", "3.11", "3.12-dev"]
+        node: [16.x, 18.x, 20.x]
+        python: ["3.8", "3.11", "3.12-dev"]
         os: [macos-latest, ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps: