fix: update branch references from main to master and remove Node.js 18

- Change all workflow triggers from 'main' to 'master' branch
- Update semantic-release condition to use 'refs/heads/master'
- Remove Node.js 18 from benchmark workflow, keeping only Node.js 20
- Update README coverage badge to reference master branch
- Update .releaserc.json to use master as primary branch

Signed-off-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: Copilot

.github/workflows/benchmark.yml

@@ -3,7 +3,7 @@ name: Benchmarks
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
 
 permissions:
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [^18, ^20]
+        node-version: [^20]
     steps:
       - uses: actions/checkout@v4
 

.github/workflows/ci.yml

@@ -3,7 +3,7 @@ name: CI
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
 
 permissions:
@@ -93,7 +93,7 @@ jobs:
           node-version: ^20
 
       - name: Run semantic-release
-        if: github.repository == 'casbin/casbin-core' && github.event_name == 'push' && github.ref == 'refs/heads/main'
+        if: github.repository == 'casbin/casbin-core' && github.event_name == 'push' && github.ref == 'refs/heads/master'
         run: |
           yarn install
           yarn run build

.github/workflows/platform_test.yml

@@ -3,7 +3,7 @@ name: Platform Test
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
 
 permissions:

.releaserc.json

@@ -1,7 +1,7 @@
 {
   "debug": true,
   "branches": [
-    "main",
+    "master",
     {
       "name": "beta",
       "channel": "beta",

README.md

@@ -1,7 +1,7 @@
 # Casbin-Core
 
 [![CI](https://github.com/casbin/casbin-core/actions/workflows/ci.yml/badge.svg)](https://github.com/casbin/casbin-core/actions/workflows/ci.yml)
-[![Coverage Status](https://coveralls.io/repos/github/casbin/casbin-core/badge.svg?branch=main)](https://coveralls.io/github/casbin/casbin-core?branch=main)
+[![Coverage Status](https://coveralls.io/repos/github/casbin/casbin-core/badge.svg?branch=master)](https://coveralls.io/github/casbin/casbin-core?branch=master)
 [![NPM version][npm-image]][npm-url]
 [![NPM download][download-image]][download-url]
 [![Discord](https://img.shields.io/discord/1022748306096537660?logo=discord&label=discord&color=5865F2)](https://discord.gg/S5UjpzGZjN)