Add Node.js 26 support and Drop Node.js 20 support (#1600)

and npm audit fix

after review, we 
1. add Node.js v26 job to required jobs for PR
2. delete Node.js v20 jobs from required jobs for PR

Author: Yang-33

.github/workflows/test.yml

@@ -15,10 +15,9 @@ jobs:
       matrix:
         # https://nodejs.org/en/about/releases/
         node:
-          - '20'
-          - '20.12.2'
           - '22'
-          - '24.9.0'
+          - '24'
+          - '26'
       fail-fast: false
 
     name: Node.js ${{ matrix.node }}

.npmrc

@@ -1,2 +1,3 @@
 ignore-scripts=true
 min-release-age=7
+registry=https://registry.npmjs.org/

README.md

@@ -19,7 +19,7 @@ line-bot-sdk-nodejs documentation
 
 ## Requirements
 
-* **Node.js** 20 or higher
+* **Node.js** 22 or higher
 
 ## Installation
 

docs/getting-started/requirements.md

@@ -1,6 +1,6 @@
 # Requirements
 
-* **Node.js** >= 20.
+* **Node.js** >= 22.
   * It uses ES2022.
 * [**npm**](https://www.npmjs.com/), preferably >=10
 

examples/echo-bot-esm/.npmrc

@@ -1,2 +1,3 @@
 ignore-scripts=true
 min-release-age=7
+registry=https://registry.npmjs.org/