chore: update coverage workflow to simplify and modernize setup

Revised the GitHub Actions workflow for code coverage by updating dependencies, using modern, maintained actions, and improving configuration clarity. Streamlined Rust installation and replaced manual steps with dedicated actions for better reliability. Adjusted Codecov settings for stricter error handling.

Signed-off-by: Harald Hoyer <harald@hoyer.xyz>

.github/workflows/coverage.yml

@@ -13,31 +13,24 @@ on:
     types:
       - created
 
+
 jobs:
-  test:
+  coverage:
-    name: coverage
     runs-on: ubuntu-latest
+    env:
+      CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@master
+      - name: Install Rust
-        with:
+        run: |
-          target: x86_64-unknown-linux-gnu
+          rustup update nightly
-          toolchain: nightly
-          components: llvm-tools-preview
-
       - name: Install cargo-llvm-cov
-        run: >
+        uses: taiki-e/install-action@cargo-llvm-cov
-          curl -LsSf 'https://github.com/taiki-e/cargo-llvm-cov/releases/download/v0.5.23/cargo-llvm-cov-x86_64-unknown-linux-musl.tar.gz'
+      - name: Generate code coverage
-          | tar xzf -
+        run: cargo +nightly llvm-cov --all-features --workspace --codecov --doctests --output-path codecov.json
-          && mv cargo-llvm-cov $HOME/.cargo/bin
-
-      - name: Run cargo-llvm-cov
-        run: cargo llvm-cov --doctests --all --all-features --lcov --output-path lcov.info
-
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         with:
-          directory: ./
+          token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
-          fail_ci_if_error: false
+          files: codecov.json
-          files: ./lcov.info
+          fail_ci_if_error: true
-          verbose: true