Merge the microbuild branch from https://github.com/aarnott/Library.Template

Specifically, this merges [6307413 from that repo](AArnott/Library.Template@6307413).

Author: AArnott

.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # Refer to https://hub.docker.com/_/microsoft-dotnet-sdk for available versions
-FROM mcr.microsoft.com/dotnet/sdk:9.0.200-noble
+FROM mcr.microsoft.com/dotnet/sdk:9.0.201-noble
 
 # Installing mono makes `dotnet test` work without errors even for net472.
 # But installing it takes a long time, so it's excluded by default.

.github/workflows/release.yml

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.200",
+    "version": "9.0.201",
     "rollForward": "patch",
     "allowPrerelease": false
   },