ci: remove node 14 from test matrix

Author: jankapunkt

.github/workflows/tests.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [14, 16, 18, 20]
+        node: [16, 18, 20]
     steps:
     - name: Checkout ${{ matrix.node }}
       uses: actions/checkout@v3