Ignore platform requirements on PHP8

Author: Naktibalda

.github/workflows/main.yml

@@ -31,16 +31,27 @@ jobs:
       if: matrix.php < 7.4
       run: composer self-update --1
 
-    - name: Install Mezzio Sample
+    - name: Install Mezzio Sample on PHP 7
+      if: matrix.php < 8
       run: composer update --no-dev --prefer-dist --no-interaction
       working-directory: framework-tests
 
+    - name: Install Mezzio Sample on PHP 8
+      if: matrix.php == 8.0
+      run: composer update --no-dev --prefer-dist --no-interaction --ignore-platform-req=php
+      working-directory: framework-tests
+
     - name: Validate composer.json and composer.lock
       run: composer validate
 
-    - name: Install dependencies
+    - name: Install dependencies on PHP 7
+      if: matrix.php < 8
       run: composer install --prefer-dist --no-progress --no-interaction --no-suggest
 
+    - name: Install dependencies on PHP 8
+      if: matrix.php == 8.0
+      run: composer install --prefer-dist --no-progress --no-interaction --ignore-platform-req=php
+
     - name: Run test suite
       run: |
         php vendor/bin/codecept build -c framework-tests