Use PHP 8.4 for static-analysis job

Author: sebastianbergmann

.github/workflows/ci.yml

@@ -42,7 +42,7 @@ jobs:
       - name: Install PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           extensions: none, ctype, dom, iconv, mbstring, opcache, simplexml, tokenizer, xml, xmlwriter
           coverage: none
           tools: none