Upgrade CI workflow to use Ubuntu 24.04 and updated actions

Author: dereuromark

.github/workflows/ci.yml

@@ -8,14 +8,14 @@ on:
 jobs:
   testsuite:
     name: Unittests
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['8.1', '8.3']
+        php-version: ['8.1', '8.5']
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v5
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
@@ -43,14 +43,14 @@ jobs:
 
     - name: Code Coverage Report
       if: success() && matrix.php-version == '8.1'
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v5
 
   cs-stan:
     name: Coding Standard & Static Analysis
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v5
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2