Refactor CI workflow to improve coverage reporting and installation steps

Signed-off-by: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>

Author: thombashi

.github/workflows/ci.yml

@@ -133,37 +133,28 @@ jobs:
       - run: make setup-ci
 
       - name: Run tests
-        run: |
-          tox -e py
-          # tox -e py -- --discord-verbose=0  # reduce verbosity level of summary that send to discord
-
-  coverage:
-    runs-on: ubuntu-latest
-    concurrency:
-      group: ${{ github.event_name }}-${{ github.workflow }}-${{ github.ref_name }}-coverage
-      cancel-in-progress: true
-    timeout-minutes: 20
+        run: tox -e cov
 
-    steps:
-      - uses: actions/checkout@v4
+      - name: Install coveralls
+        run: python -m pip install --upgrade --disable-pip-version-check coveralls tomli
 
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-          cache: pip
-          cache-dependency-path: |
-            setup.py
-            **/*requirements.txt
-            tox.ini
+      - name: Upload coverage data to coveralls.io
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COVERALLS_FLAG_NAME: ${{ matrix.os }}-${{ matrix.python-version }}
+          COVERALLS_PARALLEL: true
+        run: coveralls
 
-      - run: make setup-ci
+  coveralls:
+    name: Indicate completion to coveralls.io
+    needs: unit-test
+    runs-on: ubuntu-latest
+    container: python:3-slim
 
-      - name: Run tests
-        run: tox -e cov
+    steps:
+    - run: pip3 install --upgrade coveralls
 
-      - name: Upload coverage report
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          python -m pip install --upgrade --disable-pip-version-check coveralls tomli
-          coveralls --service=github
+    - name: Finished
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: coveralls --finish