fix: change coveralls version (#25499)

diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index 824b74e..4103bc6 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -85,8 +85,8 @@
         run: |
           cp ~/frappe-bench/sites/.coverage ${GITHUB_WORKSPACE}
           cd ${GITHUB_WORKSPACE}
-          pip install coveralls==3.0.1
-          pip install coverage==5.5
+          pip install coveralls==2.2.0
+          pip install coverage==4.5.4
           coveralls --service=github
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}