Bump MetaBrainz.Build.Sdk from 2.1.1 to 2.1.2

Bumps [MetaBrainz.Build.Sdk](https://github.com/Zastai/MetaBrainz.Build) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/Zastai/MetaBrainz.Build/releases)
- [Commits](Zastai/MetaBrainz.Build@v2.1.1...v2.1.2)

---
updated-dependencies:
- dependency-name: MetaBrainz.Build.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

global.json

@@ -1,5 +1,5 @@
 {
   "msbuild-sdks": {
-    "MetaBrainz.Build.Sdk" : "2.1.1"
+    "MetaBrainz.Build.Sdk" : "2.1.2"
   }
 }