Update the GitHub Actions CI workflow triggers.

Author: DevHawkNov

.github/workflows/ci.yml

@@ -1,5 +1,5 @@
 name: CI
-on: [push, pull_request]
+on: [push, workflow_dispatch]
 jobs:
   test:
     name: Test with Node.js v${{ matrix.node }} and ${{ matrix.os }}

changelog.md

@@ -13,6 +13,8 @@
 - Updated dev dependencies.
 - Updated the `package.json` field `repository` to conform to new npm requirements.
 - Updated GitHub Actions CI config:
+  - No longer run the workflow on pull request.
+  - Enable manual workflow dispatching.
   - Run tests with Node.js v18, v20, v22.
   - Updated `actions/checkout` to v4.
   - Updated `actions/setup-node` to v4.