Update swift.yml

Author: maximkrouk

.github/workflows/swift.yml

@@ -11,11 +11,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: Didstopia/SwiftAction@master
+    - uses: actions/checkout@v2
+    - uses: Didstopia/SwiftAction@1.0.3
       with:
         swift-action: 'build'
-    
-    - uses: actions/checkout@v2
 
     - name: Build
       run: swift build -v