Update dependency dotnet-sdk to v7.0.400 (#421)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

global.json

@@ -1,7 +1,7 @@
 {
     "sdk": {
         "allowPrerelease": true,
-        "version": "7.0.306",
+        "version": "7.0.400",
         "rollForward": "latestFeature"
     }
 }