ci: split tests and coverage (#286)

Fixes #

### What Changed?

Fireblocks tests don't work for external contributors. This PR splits
the test run in the CI into two: "Run Tests" and "Generate Coverage".
The idea is to have the first one run without fireblocks, while the
second one runs with it and is not required for merge.

### Reviewer Checklist

- [ ] New features are tested and documented
- [ ] PR updates the changelog with a description of changes
- [ ] PR has one of the `changelog-X` labels (if applies)
- [ ] Code deprecates any old functionality before removing it

Author: MegaRedHand

.github/workflows/integration.yml

@@ -47,6 +47,27 @@ jobs:
   test:
     name: Run Tests
     runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+
+      - name: docker
+        uses: docker/setup-docker-action@v4
+
+      - name: Run tests
+        run: cargo test --workspace
+
+  coverage:
+    name: Generate Coverage
+    runs-on: ubuntu-latest
     env:
       HOLESKY_WS_URL: ${{ secrets.HOLESKY_WS_URL }}
       HOLESKY_HTTP_URL: ${{ secrets.HOLESKY_HTTP_URL }}
@@ -58,25 +79,20 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-      
+        uses: dtolnay/rust-toolchain@stable
+
       - name: Create private key file
         run: printf "%b" "$FIREBLOCKS_PRIVATE_KEY" > fireblocks_secret.key
 
       - name: Set environment variable for private key path
         run: echo "FIREBLOCKS_PRIVATE_KEY_PATH=$(pwd)/fireblocks_secret.key" >> $GITHUB_ENV
 
-      - name: Install nightly Rust
-        run: rustup toolchain install nightly
-
       - name: Cache Rust dependencies
         uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true
 
-      - name: Install testing tools
+      - name: Install llvm-cov
         uses: taiki-e/install-action@v2
         with:
           tool: cargo-llvm-cov