ci: add automated PR for dep upgrades

.github/workflows/dependency-check.yml

@@ -93,10 +93,11 @@ jobs:
         run: |
           echo "📝 Updating template with new dependency versions..."
 
-          # Copy the upgraded Cargo.toml back to template
-          cp ../dep-check-test/Cargo.toml Cargo.toml.liquid
+          # Run the merge script from .ci directory
+          python3 .ci/merge_versions.py dep-check-test/Cargo.toml Cargo.toml.liquid
 
           # Show what changed
+          echo ""
           echo "Changes to template:"
           git diff Cargo.toml.liquid
         working-directory: ${{ github.workspace }}/axum-template
@@ -161,7 +162,7 @@ jobs:
           UPGRADE_SUMMARY=$(cat upgrade-output.txt | grep -A 100 "name.*old req.*compatible.*latest.*new req" | head -n 20)
 
           cat > pr-body.txt << 'EOF'
-          This PR contains automated dependency upgrades that have been tested and verified.
+          This PR contains automated dependency upgrades that have been tested with `cargo check` and `cargo build`
 
           ## Changes