Update workflow

.github/workflows/main.yml

@@ -11,6 +11,11 @@ on:
   workflow_dispatch:
   pull_request:
     branches: [ main ]
+    paths:
+      - Sources/**
+      - Tests/**
+      - Package.swift
+      - .github/**
 
 concurrency: 
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -21,12 +26,12 @@ jobs:
     name: Run tests
     runs-on: macos-latest
     steps:
-      - uses: swift-actions/setup-swift@v2
-        with:
-          swift-version: "5.9"
       - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
+      - uses: swift-actions/setup-swift@v2
+        with:
+          swift-version: "5.9"  
       - name: Build and test
-        run: swift build && swift test
+        run:  swift test -Xswiftc -swift-version -Xswiftc "5.9.2"