add swift targets back

.github/workflows/check_package.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: macOS-latest
     strategy:
       matrix:
-        swift: ["5.8"]
+        swift: ["5.3", "5.3.1", "5.3.2", "5.4", "5.4.2", "5.5", "5.8"]
 
     steps:
       - uses: actions/checkout@v2