feat: drop support for Node.js v18

BREAKING CHANGE: Node.js v18 is no longer officially supported.

Author: robertrossmann

.github/workflows/integration.yaml

@@ -14,7 +14,6 @@ jobs:
           - macos-15
           - windows-2022
         node:
-          - 18
           - 20
           - 22
           - 23

package-lock.json

@@ -31,7 +31,7 @@
     "typescript": "^5.7.3"
   },
   "engines": {
-    "node": "^18 || ^20 || ^22 || ^23"
+    "node": "^20 || ^22 || ^23"
   },
   "homepage": "https://github.com/strvcom/heimdall",
   "keywords": [],

package.json

@@ -3,8 +3,8 @@
     "incremental": true,
     "noEmitOnError": true,
     "tsBuildInfoFile": ".buildstate/tsconfig.tsbuildinfo",
-    "target": "ES2019",
-    "module": "commonjs",
+    "target": "ES2022",
+    "module": "NodeNext",
     "declaration": true,
     "declarationMap": true,
     "inlineSourceMap": true,