chore: php and node.js versions in github workflows

.github/workflows/phpcs.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Set PHP version
       uses: shivammathur/setup-php@v2
       with:
-        php-version: '7.4'
+        php-version: '8.2'
     - name: composer install
       run: cd ./wp/headless-wp && composer install --ignore-platform-reqs
     - name: Check PHPCS standard

.github/workflows/phpunit.yml

@@ -6,13 +6,16 @@ jobs:
   phpunit:
     name: phpunit
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-version: ['7.4', '8.0', '8.2']
     steps:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Set PHP version
       uses: shivammathur/setup-php@v2
       with:
-        php-version: "8.0"
+        php-version: ${{ matrix.php-version }}
     - name: npm install
       run: npm install
     - name: composer install

.github/workflows/unit-tests.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x]
+        node-version: [16.x, 18.x, 20.x]
 
     steps:
       - name: Checkout

.nvmrc

@@ -1 +1 @@
-18
+20