Revert "chore: create separate codecov job to use environment variable"

This reverts commit 1b0ab57.

Author: abelaba

.github/workflows/main.yml

@@ -37,31 +37,10 @@ jobs:
       - name: Run pytest
         shell: bash -el {0}
         run: pixi run -e tests-linux-py${{ matrix.python-version }} tests-with-cov
-      - name: Upload code coverage artifact.
+      - name: Upload coverage report.
         if: matrix.python-version == '312'
-        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f  # v7.0.0
-        with:
-          name: coverage
-          path: coverage.xml
-  upload-codecov:
-    name: Upload coverage report to codecov
-    needs: run-tests-linux
-    runs-on: ubuntu-latest
-    environment: codecov
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
-        with:
-          persist-credentials: false
-      - name: Download code coverage artifact
-        # yamllint disable-line rule:line-length
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c  # v8.0.1
-        with:
-          name: coverage
-          path: .
-      - name: Upload to codecov
         uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238  # v4.6.0
         with:
-          files: ./coverage.xml
           token: ${{ secrets.CODECOV_TOKEN }}
   run-tests-win-and-mac:
     name: Run tests on ${{ matrix.os }} py${{ matrix.python-version }}