Bump csharpier from 1.1.2 to 1.2.0

---
updated-dependencies:
- dependency-name: csharpier
  dependency-version: 1.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.config/dotnet-tools.json

@@ -10,7 +10,7 @@
       "rollForward": false
     },
     "csharpier": {
-      "version": "1.1.2",
+      "version": "1.2.1",
       "commands": [
         "csharpier"
       ],