Temporary workaround: ignore PHP 8.5 platform requirement in composer install

Until dependencies (pestphp/pest, brianium/paratest) officially support PHP 8.5,
we use --ignore-platform-req=php to bypass platform checks.
This should be removed in approximately 1 month when dependencies are updated.

.gitea/workflows/security-scan.yml

@@ -60,7 +60,9 @@ jobs:
       - name: Install dependencies
         run: |
           cd /workspace/repo
-          composer install --prefer-dist --no-progress --no-dev
+          # TEMPORARY WORKAROUND: Ignore PHP 8.5 platform requirement until dependencies officially support PHP 8.5
+          # TODO: Remove --ignore-platform-req=php when dependencies are updated (estimated: 1 month)
+          composer install --prefer-dist --no-progress --no-dev --ignore-platform-req=php
 
       - name: Save Composer cache
         run: |