Modernize: Node 18+, replace postman-request with axios

.babelrc

@@ -3,7 +3,7 @@
     [
       "@babel/preset-env",
       {
-        "targets": "maintained node versions"
+        "targets": "node >= 18"
       }
     ]
   ],

.github/workflows/push.yml

@@ -5,10 +5,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: ['12', '14', '16']
+        node-version: ['18', '20', '22']
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci

.mocharc.yml

@@ -0,0 +1,3 @@
+require:
+  - '@babel/register'
+recursive: true

README.md

@@ -8,9 +8,6 @@ A node.js module, which provides an object oriented wrapper for the Jira Rest AP
 [![npm](https://img.shields.io/npm/v/jira-client.svg)](https://www.npmjs.com/package/jira-client)
 [![Downloads](https://img.shields.io/npm/dm/jira-client.svg)](https://npmjs.com/jira-client)
 [![Install Size](https://packagephobia.now.sh/badge?p=jira-client)](https://packagephobia.now.sh/result?p=jira-client)
-[![dependency Status](https://david-dm.org/jira-node/node-jira-client/status.svg)](https://david-dm.org/jira-node/node-jira-client)
-[![devDependency Status](https://david-dm.org/jira-node/node-jira-client/dev-status.svg)](https://david-dm.org/jira-node/node-jira-client?type=dev)
-
 ## Installation ##
 
 Install with the node package manager [npm](http://npmjs.org):
@@ -19,6 +16,8 @@ Install with the node package manager [npm](http://npmjs.org):
 $ npm install jira-client
 ```
 
+**Requires Node.js >= 18.**
+
 ## Examples ##
 
 ### Create the JIRA client ###