Bump ramsey/composer-install from 3 to 4 (#199)

Author: dependabot[bot]

.github/workflows/static-analysis.yml

@@ -38,7 +38,7 @@ jobs:
                     coverage: none # disable xdebug, pcov
 
             -   name: Composer install
-                uses: ramsey/composer-install@v3
+                uses: ramsey/composer-install@v4
                 with:
                     composer-options: '--ansi --prefer-dist'
 

.github/workflows/unit-tests.yml

@@ -37,7 +37,7 @@ jobs:
                     coverage: none # disable xdebug, pcov
 
             -   name: Composer install
-                uses: ramsey/composer-install@v3
+                uses: ramsey/composer-install@v4
                 with:
                     composer-options: '--ansi --prefer-dist'