refactor(ci): parameterize composite action and add concurrency

- Add php-version input to setup-wordpress action (default 8.2,
  was hardcoded 8.0 which didn't match any tested version)
- Use .nvmrc for Node version in composite action
- Add workflow-level concurrency with cancel-in-progress to all
  PR-triggered workflows, replacing the removed styfle/cancel action

Relates to #411

Author: josephfusco

.github/actions/setup-wordpress/action.yml

@@ -2,6 +2,10 @@ name: Set up WordPress
 description: Sets up WordPress. Assumes mariadb is available as a service.
 
 inputs:
+  php-version:
+    description: 'PHP version to use'
+    required: false
+    default: '8.2'
   wp-version:
     description: 'WordPress version to install'
     required: false
@@ -13,15 +17,15 @@ runs:
     - name: Setup PHP w/ Composer & WP-CLI
       uses: shivammathur/setup-php@v2
       with:
-        php-version: 8.0
+        php-version: ${{ inputs.php-version }}
         extensions: mbstring, intl, bcmath, exif, gd, mysqli, opcache, zip, pdo_mysql
         coverage: none
         tools: composer:v2, wp-cli
 
     - name: Setup Node.js
       uses: actions/setup-node@v4
       with:
-        node-version: 18.x
+        node-version-file: '.nvmrc'
 
     - name: Get Composer cache directory
       id: composer-cache

.github/workflows/phpstan.yml

@@ -5,6 +5,10 @@ on:
     paths-ignore:
       - '**/*.md'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   phpstan:
     runs-on: ubuntu-22.04

.github/workflows/schema-linter.yml

@@ -10,6 +10,10 @@ on:
       - develop
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   run:
     runs-on: ubuntu-22.04

.github/workflows/test-plugin.yml

@@ -6,6 +6,10 @@ on:
     paths-ignore:
       - '**/*.md'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test_plugin:
     runs-on: ubuntu-22.04

.github/workflows/wpcs.yml

@@ -3,6 +3,10 @@ name: WordPress Coding Standards
 on:
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   wpcs:
     runs-on: ubuntu-22.04