chore(deps): update swift docker tag to v6

renovate[bot] · web-flow · commit 9a6aa1f9e434 · 2024-09-18T02:09:23.000Z
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
   "name": "Swift 5.6",
-  "image": "swift:5.6-focal",
+  "image": "swift:6.0-focal",
   "extensions": [
     "sswg.swift-lang"
   ],
