Remove codecov

Ahhhh, I can't be bothered

Author: CGA1123

.github/workflows/ci.yml

@@ -22,8 +22,5 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
-      - uses: codecov/codecov-action@v4
-        with:
-          use_oidc: true
       - run: bundle exec rspec --format progress
       - run: bundle exec rubocop