ci: separate integration tests

`runtime-benchmarks` feature should not be used for integration tests.

.github/workflows/ci.yml

@@ -54,7 +54,18 @@ jobs:
       - uses: "./.github/actions/init"
 
       - name: Run tests
-        run: cargo test --release --locked --verbose --workspace --features=runtime-benchmarks
+        run: cargo test --release --locked --verbose --workspace --features=runtime-benchmarks --exclude integration-tests
+
+  integration-tests:
+    needs: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: "./.github/actions/init"
+
+      - name: Run integration tests
+        run: cargo test --release --locked --package integration-tests
 
   coverage:
     needs: lint
@@ -68,7 +79,7 @@ jobs:
         uses: taiki-e/install-action@cargo-llvm-cov
 
       - name: Generate code coverage
-        run: cargo llvm-cov --all-features --workspace --lib --bins --codecov --output-path codecov.json
+        run: cargo llvm-cov --all-features --workspace --exclude integration-tests --lib --bins --codecov --output-path codecov.json
 
       - name: Upload to codecov.io
         uses: codecov/codecov-action@v4