chore: require symfony/psr7-pack but remove it in CI

This way we improve the DX (phpstan, running cypress in local), but we remove it in the CI to check if Behat bridge still works

.github/workflows/ci.yml

@@ -31,13 +31,10 @@ jobs:
               with:
                   node-version: ${{ env.NODE_VERSION }}
 
-            - run: composer install --prefer-dist --no-interaction --no-progress
-            - run: cp .github/psr_http_message_bridge.yaml fixtures/applications/Symfony/config/packages
-            - run: cp .github/nyholm_psr7.yaml fixtures/applications/Symfony/config/packages
-            - run: composer require symfony/psr7-pack # To make PHPStan and me happy, it prevent me to write stubs for PHPStan
-
             - run: composer validate --strict
 
+            - run: composer install --prefer-dist --no-interaction --no-progress
+
             - run: composer phpstan
 
             - run: composer php-cs-fixer@ci
@@ -99,6 +96,11 @@ jobs:
               if: matrix.config.SYMFONY_VERSION
               run: echo "SYMFONY_REQUIRE=${{ matrix.config.SYMFONY_VERSION }}" >> $GITHUB_ENV
 
+            # Remove PSR-7 related things which are only needed for Cypress.
+            - run: |
+                  rm fixtures/applications/Symfony/config/packages/nyholm_psr7.yaml
+                  composer remove symfony/psr7-pack
+
             - name: Install composer dependencies
               run: composer update ${{ matrix.config.COMPOSER_FLAGS }} --prefer-dist --no-interaction --no-progress
 
@@ -131,9 +133,6 @@ jobs:
                   node-version: ${{ env.NODE_VERSION }}
 
             - run: composer install --no-progress --no-suggest --prefer-dist --optimize-autoloader
-            - run: cp .github/psr_http_message_bridge.yaml fixtures/applications/Symfony/config/packages
-            - run: cp .github/nyholm_psr7.yaml fixtures/applications/Symfony/config/packages
-            - run: composer require symfony/psr7-pack
 
             - run: composer server-start
 

composer.json

@@ -33,9 +33,9 @@
   "require": {
     "php": "^7.3 || ^8.0",
     "ext-json": "*",
+    "phpunit/phpunit": "^8.5 || ^9.0",
     "symfony/console": "^4.4 || ^5.0",
-    "symfony/mailer": "^4.4 || ^5.0",
-    "phpunit/phpunit": "^8.5 || ^9.0"
+    "symfony/mailer": "^4.4 || ^5.0"
   },
   "require-dev": {
     "behat/behat": "^3.6",
@@ -47,7 +47,8 @@
     "phpstan/phpstan-strict-rules": "^0.12.2",
     "phpstan/phpstan-symfony": "^0.12.6",
     "phpstan/phpstan-webmozart-assert": "^0.12.4",
-    "symfony/framework-bundle": "^4.4.14 || ^5.0"
+    "symfony/framework-bundle": "^4.4.14 || ^5.0",
+    "symfony/psr7-pack": "^1.0"
   },
   "autoload": {
     "psr-4": {