chore: add testruns for php 8.3, bump github action versions

Author: Chris8934

.github/workflows/code_coverage.yaml

@@ -7,7 +7,7 @@ jobs:
   code_coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
           php-version: 8.2

.github/workflows/tests.yml

@@ -13,9 +13,10 @@ jobs:
         php:
           - 8.1
           - 8.2
+          - 8.3
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: shivammathur/setup-php@v2
         with: