Run tests in GitHub Actions (#608)

- Runs the test suite in GitHub Actions
- Adds Dependabot configuration for GitHub Actions

CircleCI configuration will be removed later, for now we can run the
tests in both CircleCI and GitHub Actions.

.github/dependabot.yml

@@ -9,3 +9,11 @@ updates:
     time: "05:00"
     timezone: Australia/Sydney
   open-pull-requests-limit: 99
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: weekly
+    day: monday
+    time: "05:00"
+    timezone: Australia/Sydney
+  open-pull-requests-limit: 5

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  test:
+    name: "test-node-${{ matrix.node-version }}"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [14, 16, 18, 20]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup NodeJS ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run tests
+        env:
+          JEST_JUNIT_OUTPUT_DIR: ./test-reports/jest
+          JEST_JUNIT_OUTPUT_NAME: results.xml
+          JEST_JUNIT_CLASSNAME: "{filepath}"
+        run: yarn ci:test
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-results-node-${{ matrix.node-version }}
+          path: ./test-reports
+
+      - name: Test summary
+        uses: test-summary/action@v1
+        with:
+          paths: ./test-reports/jest/results.xml