Build on swift 5.9

Author: AndrewBarba

.github/workflows/build.yml

@@ -5,11 +5,11 @@ on: push
 jobs:
   build:
     runs-on: ubuntu-latest
-    container: ghcr.io/swiftwasm/swift:5.7
+    container: ghcr.io/swiftwasm/swift:5.9
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - run: swift --version
 
-      - run: swift build -c debug --triple wasm32-unknown-wasi
+      - run: swift build -c debug --triple wasm32-unknown-wasi