Use php 8.4 in workflows

Author: SenseException

.github/workflows/coding-style.yml

@@ -15,7 +15,7 @@ jobs:
     - name: "Setup PHP Action"
       uses: "shivammathur/setup-php@v2"
       with:
-        php-version: "8.3"
+        php-version: "8.4"
         extensions: "intl"
 
     - name: "Install dependencies with Composer"

.github/workflows/static-analysis.yml

@@ -15,7 +15,7 @@ jobs:
     - name: "Setup PHP Action"
       uses: "shivammathur/setup-php@v2"
       with:
-        php-version: "8.3"
+        php-version: "8.4"
         extensions: "intl, xdebug"
 
     - name: "Install dependencies with Composer"

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
           - php-versions: "8.3"
             continue-on-error: false
           - php-versions: "8.4"
-            composer-option: "--ignore-platform-reqs"
+            composer-option: ""
             continue-on-error: true
           - php-versions: "8.5"
             composer-option: "--ignore-platform-reqs"