feat: Update minimum Node.js version to 20 (#3277)

package-lock.json

@@ -38,7 +38,7 @@
         "yargs": "^17.7.2"
       },
       "engines": {
-        "node": ">=18.0.0"
+        "node": ">=20.0.0"
       }
     },
     "node_modules/@alcalzone/ansi-tokenize": {
@@ -11252,7 +11252,7 @@
         "vitest": "^3.1.1"
       },
       "engines": {
-        "node": ">=18"
+        "node": ">=20"
       }
     },
     "packages/cli/node_modules/@testing-library/dom": {
@@ -11416,7 +11416,7 @@
         "vitest": "^3.1.1"
       },
       "engines": {
-        "node": ">=18"
+        "node": ">=20"
       }
     },
     "packages/core/node_modules/ignore": {