Removed Node.js version 8.x from the test suite

Author: Chris Wiechmann

.github/workflows/plugin-fn-google-maps.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x, 14.x]
+        node-version: [10.x, 12.x, 14.x]
     steps:
     - uses: actions/checkout@v1
     - name: Use Node.js ${{ matrix.node-version }}