fix: stop testing in Node 12, test in Node 16 + 18 (#52)

Author: gr2m

templates/github-actions/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node_version: ["12", "14"]
+        node_version: ["14", "16", "18"]
 
     steps:
       - uses: actions/checkout@v2
@@ -29,4 +29,4 @@ jobs:
     runs-on: ubuntu-latest
     needs: test_matrix
     steps:
-      - run: echo ok
+      - run: echo ok