Remove Node v10 test (#564)

Goodnight, sweet Prince

Author: drwpow

.github/workflows/pull_request.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x, 15.x]
+        node-version: [12.x, 14.x, 15.x]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1