chore: update PHP version to 8.4 in workflow configuration (#80)

Author: chinmaypurav

.github/workflows/tests.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           tools: composer:v2
 
       - name: Install Dependencies
@@ -51,7 +51,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           tools: composer:v2
 
       - name: Install Dependencies