ci: Stop testing on node 10 and 12.

BREAKING CHANGE: No longer running unit tests on node 10 and 12, although this package may continue to work on these.

.github/workflows/github-ci.yaml

@@ -1,16 +1,21 @@
 name: GitHub CI
-on: [push, pull_request]
+on:
+  push:
+    branches: [master]
+    tags:
+      - '*'
+  pull_request:
 
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [14.x, 16.x, 'lts/*']
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: docker-compose up -d
@@ -40,9 +45,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
-          node-version: '14'
+          node-version: 'lts/*'
       - run: npm install
       - name: semantic-release
         run: npm run semantic-release