Remove superfluous double-quotes

Author: sebastianbergmann

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
 name: CI
 
 env:
-  COMPOSER_ROOT_VERSION: "10.1.x-dev"
+  COMPOSER_ROOT_VERSION: 10.1.x-dev
 
 jobs:
   coding-guidelines:
@@ -70,14 +70,14 @@ jobs:
           - windows-latest
 
         php-version:
-          - "8.1"
-          - "8.2"
-          - "8.3"
-          - "8.4"
+          - 8.1
+          - 8.2
+          - 8.3
+          - 8.4
 
         coverage-driver:
-          - "pcov"
-          - "xdebug3"
+          - pcov
+          - xdebug3
 
     steps:
       - name: Configure Git to avoid issues with line endings