workflow needs Swift 6.1

Author: lhoward

.github/workflows/swift.yml

@@ -30,7 +30,7 @@ jobs:
 
   linux-wayland:
     runs-on: ubuntu-24.04
-    container: swift:6.0
+    container: swift:6.1
     env:
       FLUTTER_SWIFT_BACKEND: wayland
     steps:
@@ -67,7 +67,7 @@ jobs:
 
   linux-gbm:
     runs-on: ubuntu-24.04
-    container: swift:6.0
+    container: swift:6.1
     env:
       FLUTTER_SWIFT_BACKEND: gbm
     steps: