Check PHP 8.3

.github/workflows/ci.yml

@@ -3,20 +3,18 @@ name: CI
 on:
   pull_request:
   push:
-    branches:
-      - master
   workflow_dispatch:
 
 jobs:
   testsuite:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.3', '8.2']
+        php-version: ['7.3', '8.2', '8.3']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -44,7 +42,7 @@ jobs:
 
   validation:
     name: Coding Standard & Static Analysis
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - uses: actions/checkout@v2
@@ -66,7 +64,7 @@ jobs:
         run: composer cs-check
 
   prefer-lowest:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
@@ -76,7 +74,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2