fix: remove html reporter & change cov. report retention days

.github/workflows/lint-and-test-code.yml

@@ -64,6 +64,7 @@ jobs:
         with:
           name: coverage
           path: coverage/lcov-report/
+          retention-days: ${{ env.RETENTION_DAYS }}
 
       - name: Upload coverage to Coveralls
         uses: coverallsapp/github-action@v2

vitest.config.ts

@@ -13,7 +13,7 @@ export default defineConfig({
         "lib/index.ts",
         "lib/types.ts",
       ],
-      reporter: ["text", "text-summary", "html", "lcov"],
+      reporter: ["text", "text-summary", "lcov"],
     },
     include: ["lib/**/*.spec.ts"],
     environment: "jsdom",