Drop Node 12 (#4)

Author: John Richard Chipps-Harding

.github/workflows/pr.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [14.x, 16.x]
 
     steps:
       - uses: actions/checkout@v1

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [14.x, 16.x]
 
     steps:
       - uses: actions/checkout@v1