fix: add retry logic to composer install steps to resolve DNS timeout failures

Replace bare 'composer install' with ramsey/composer-install action (which
provides built-in retry, caching, and --prefer-dist) in code-quality.yml and
tests.yml. Add a 3-attempt shell retry loop in release.yml where --no-dev
--optimize-autoloader flags are required.

phpunit.yml already used ramsey/composer-install and is unaffected.

Closes #57

.github/workflows/code-quality.yml

@@ -27,7 +27,9 @@ jobs:
           tools: composer:v2
 
       - name: Install dependencies
-        run: composer install --prefer-dist --no-progress
+        uses: ramsey/composer-install@83af392bf5f031813d25e6fe4cd626cdba9a2df6 # v2.2.0
+        with:
+          composer-options: "--prefer-dist --no-progress"
 
       - name: Run PHPCS
         run: composer phpcs
@@ -54,7 +56,9 @@ jobs:
           tools: composer:v2, phpstan
 
       - name: Install dependencies
-        run: composer install --prefer-dist --no-progress
+        uses: ramsey/composer-install@83af392bf5f031813d25e6fe4cd626cdba9a2df6 # v2.2.0
+        with:
+          composer-options: "--prefer-dist --no-progress"
 
       - name: Run PHPStan
         run: composer phpstan
@@ -75,7 +79,9 @@ jobs:
           tools: composer:v2, phpmd
 
       - name: Install dependencies
-        run: composer install --prefer-dist --no-progress
+        uses: ramsey/composer-install@83af392bf5f031813d25e6fe4cd626cdba9a2df6 # v2.2.0
+        with:
+          composer-options: "--prefer-dist --no-progress"
 
       - name: Run PHPMD
         run: composer phpmd