fix(ci): use cargo nextest in coverage workflow to prevent test pollution

Author: thomasqueirozb

.github/workflows/coverage.yml

@@ -23,10 +23,11 @@ jobs:
         with:
           rust: true
           cargo-llvm-cov: true
+          cargo-nextest: true
           datadog-ci: true
 
       - name: "Generate code coverage"
-        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+        run: cargo llvm-cov nextest --all-features --workspace --lcov --output-path lcov.info
 
       - name: "Upload coverage to Datadog"
         env: