ci: udpate coveralls token env name

Author: leeqvip

.github/workflows/phpunit.yml

@@ -59,7 +59,7 @@ jobs:
 
       - name: Run Coveralls
         env:
-          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COVERALLS_REPO_TOKEN: ${{ secrets.GH_TOKEN }}
           COVERALLS_PARALLEL: true
           COVERALLS_FLAG_NAME: ${{ runner.os }} - ${{ matrix.php }}
         run: ./vendor/bin/php-coveralls --coverage_clover=build/logs/clover.xml -v
@@ -71,7 +71,7 @@ jobs:
       - name: Coveralls Finished
         uses: coverallsapp/github-action@master
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
+          github-token: ${{ secrets.GH_TOKEN }}
           parallel-finished: true
 
   semantic-release: