try to not force the special version of phpunit

.github/workflows/ci.yml

@@ -41,10 +41,8 @@ jobs:
 
     - name: Install dependencies
       # get path to composer.phar so we can run it with custom php.ini
-      # Force to install [email protected] to support [email protected]
       run: |
         COMPOSER_PHAR=$(realpath $(which composer))
-        php -c php.ini $COMPOSER_PHAR require --dev --ignore-platform-reqs phpunit/phpunit "4.8.36"
         php -c php.ini $COMPOSER_PHAR update --no-interaction
 
   php-linux-x64:
@@ -119,12 +117,12 @@ jobs:
       with:
         arch: ${{ matrix.arch }}
         toolset: ${{steps.setup-php-sdk.outputs.toolset}}
-    - run: |
-       phpize
-       .\configure --with-prefix=${{steps.setup-php-sdk.outputs.prefix}} --enable-awscrt=shared --enable-cli --enable-openssl
-       nmake
-       nmake generate-php-ini
-       .\dev-scripts\run_tests.bat ${{steps.setup-php-sdk.outputs.prefix}}\php
+    # CMD only execute one commend per run
+    - run: phpize
+    - run: .\configure --with-prefix=${{steps.setup-php-sdk.outputs.prefix}} --enable-awscrt=shared --enable-cli --enable-openssl
+    - run: nmake
+    - run: nmake generate-php-ini
+    - run: .\dev-scripts\run_tests.bat ${{steps.setup-php-sdk.outputs.prefix}}\php
 
   # windows-vc14:
   #   runs-on: windows-latest