upgrade coveralls from 1.2.0 to 1.2.4

Author: rouilj

.github/workflows/ci-test.yml

@@ -234,7 +234,7 @@ jobs:
       - name: Upload coverage to Coveralls
         # python 2.7 and 3.6 versions of coverage can't produce lcov files.
         if: matrix.python-version != '2.7' && matrix.python-version != '3.6'
-        uses: coverallsapp/github-action@0363cd28f449b7e5d3b6c6d269d31fe7c1201b68 # master
+        uses: coverallsapp/github-action@50c33ad324a9902697adbf2f92c22cf5023eacf1 # master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: coverage.lcov
@@ -270,7 +270,7 @@ jobs:
 
     steps:
       - name: Coveralls Finished
-        uses: coverallsapp/github-action@0363cd28f449b7e5d3b6c6d269d31fe7c1201b68 # master
+        uses: coverallsapp/github-action@50c33ad324a9902697adbf2f92c22cf5023eacf1 # master
         with:
           github-token: ${{ secrets.github_token }}
           parallel-finished: true