Merge pull request datamweb#30 from datamweb/use-GITHUB_TOKEN

chore: replace deprecated `COMPOSER_TOKEN` with `GITHUB_TOKEN`

Author: datamweb

.github/workflows/phpcsfixer.yml

@@ -35,7 +35,7 @@ jobs:
           extensions: json, tokenizer
           coverage: none
         env:
-          COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Get composer cache directory
         id: composer-cache