ci: stop testing against NodeJS v10, v12 (#62)

BREAKING CHANGE: Drop support for NodeJS v10, v12

Author: wolfy1339

.github/workflows/test.yml

@@ -11,7 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node_version: ["12", "14", "16"]
+        node_version:
+          - 14
+          - 16
+          - 18
 
     steps:
       - uses: actions/checkout@v3

package.json

@@ -60,7 +60,10 @@
         "@pika/plugin-ts-standard-pkg"
       ],
       [
-        "@pika/plugin-build-node"
+        "@pika/plugin-build-node",
+        {
+          "minNodeVersion": "14"
+        }
       ]
     ]
   },
@@ -103,5 +106,8 @@
     "extends": [
       "github>octokit/.github"
     ]
+  },
+  "engines": {
+    "node": ">= 14"
   }
 }