build(node): node 12+ required to run the script

Author: vmasek

package.json

@@ -45,7 +45,7 @@
     "HTTPClient"
   ],
   "engines": {
-    "node": ">=10.0.0",
+    "node": ">=12.0.0",
     "yarn": ">=1.20.0"
   },
   "license": "MIT",

src/tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "moduleResolution": "node",
-    "target": "es2020",
+    "target": "es2019",
     "module": "commonjs",
     "lib": [
       "es2015",