chore: add continue-on-error

Author: kenjis

.github/workflows/test-phpunit.yml

@@ -63,6 +63,7 @@ jobs:
         include:
           - php-version: '8.4'
             composer-option: '--ignore-platform-req=php'
+            continue-on-error: true
 
     uses: ./.github/workflows/reusable-phpunit-test.yml # @TODO Extract to codeigniter4/.github repo
     with:
@@ -104,6 +105,7 @@ jobs:
             mysql-version: '5.7'
           - php-version: '8.4'
             composer-option: '--ignore-platform-req=php'
+            continue-on-error: true
 
     uses: ./.github/workflows/reusable-phpunit-test.yml # @TODO Extract to codeigniter4/.github repo
     with:
@@ -135,6 +137,7 @@ jobs:
         include:
           - php-version: '8.4'
             composer-option: '--ignore-platform-req=php'
+            continue-on-error: true
 
     uses: ./.github/workflows/reusable-phpunit-test.yml # @TODO Extract to codeigniter4/.github repo
     with:
@@ -164,6 +167,7 @@ jobs:
         include:
           - php-version: '8.4'
             composer-option: '--ignore-platform-req=php'
+            continue-on-error: true
 
     uses: ./.github/workflows/reusable-phpunit-test.yml # @TODO Extract to codeigniter4/.github repo
     with: